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  • 1. Andreasen, Katarina
    et al.
    Manktelow, Mariette
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Successful DNA amplification of a more than 200-year-old herbarium specimen: recovering genetic material from the Linnaean era2009Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 58, nr 3, s. 959-962Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The limit for successful DNA extraction was tested by amplification and sequencing of an over 200-year-old herbarium specimen collected by Adam Afzelius, a student of Carl Linnaeus. We amplified and sequenced a 800-bp region between 16S ribosomal DNA and the 3′ part of the trnI gene (16S-trnI) in the chloroplast genomeof Phaulopsis talbotii S. Moore (Acanthaceae). To test the replicability and to control for contamination the procedure was performed in sealed vials and with negative PCR controls. The procedure was also repeated in a separate laboratory. In addition, the chloroplast rpl16 intron was successfully amplified and sequenced and the rps16 intron amplified. Sequences of taxa closely related to Acanthaceae were found to be most similar to the produced sequences. The results suggest that molecular investigations of other 18th century botanical collections are feasible and that molecular methods could be employed for comparative studies to extant plant collections. An important application would be to identify descendants or clones of Linnaean lectotypes by comparing DNA from these with potentially remnant plants from Linnaeus’ cultivations.

  • 2. Backlund, Maria
    et al.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.).
    Thulin, Mats
    Paraphyly of Paederieae, recognition of Putorieae and expansion of Plocama (Rubiaceae-Rubioideae)2007Inngår i: TAXON, ISSN 0040-0262, Vol. 56, nr 2, s. 315-328Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Phylogenctic analyses of taxa that have been included in the tribe Paederieae are performed on the basis of a molecular dataset of plastid DNA sequences (the rbcL gene, rps16 intron, and the regions trnT-F). The paraphyly of Paederieae as currently circumscribed is confirmed. A clade comprising Paederia, Spermadietyon, Leptodermis, and Serissa is retrieved and the circumscription of Paederieae is proposed to be restricted to this clade. Paederia is sister to a clade with Spermadiclyon, Leptodermis, and Serissa. Paederia is subdivided into an Asian and an African clade, and within the African clade seven species endemic to Madagascar are sister to P. pospischilii in north-eastern Africa. The position of Kelloggia as sister to Rubieae is confirmed and a position of Saprosma in the Spermacoceae alliance is supported. The genera Putoria, Gaillonia (with segregates), Plocama, and Aitchisonia form a clade that is sister to Theligoneae/Ke//oggia/Rubieae. The name Putoricae is resurrected for the members of this clade. A synopsis of Putorieae is provided, where all species are placed in an expanded Plocama with 34 species. Thirty-one new combinations in Plocama are proposed. Plocama pendula on the Canary Islands is strongly supported as sister to a clade with P. crocyllis (former Crocyllis) in southern Africa and P. yemenensis and P. tinctoria (former Gaillonia) in southern Arabia/Horn of Africa.

  • 3. Banag, Cecilia I.
    et al.
    Mouly, Arnaud
    Alejandro, Grecebio Jonathan D.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Meve, Ulrich
    Grimm, Guido W.
    Liede-Schumann, Sigrid
    Ixora (Rubiaceae) on the Philippines - crossroad or cradle?2017Inngår i: BMC Evolutionary Biology, ISSN 1471-2148, E-ISSN 1471-2148, Vol. 17, artikkel-id 131Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: The Philippine archipelago is globally one of the most important model island systems for studying evolutionary processes. However, most plant species on this archipelago have not yet been studied in sufficient detail. The main aim of this study is to unravel the evolutionary history and biogeographic relationships of the Philippine members of the pantropical genus Ixora. Results: The complex plastid and nuclear divergence patterns in Philippine Ixora, documented using tree and network approaches, reveal a highly dynamic evolution in Ixora, involving several phases of radiation and recolonization. Philippine Ixora comprises at least five lineages, of which one is most closely related to species from Wallacea, and the remaining four to species from Asia. Conclusions: Our study highlights the importance of Philippine species for understanding phytogeographic patterns in the Indomalayan-Australasian eco-region. The overall genetic differentiation, as well as the incongruence between genealogies based on the biparentally inherited nucleome and the maternally inherited plastome in Ixora, reflect the complex tectonic history of the Philippine archipelago. The Ixora lineage related to Wallacean species supports the delimitation of different ecozones along Huxley's line, because it is absent from Palawan. The remaining four lineages are all allied with Asian taxa, reflecting several waves of colonization. Close relationships between some widespread Philippine species and locally adapted narrow endemics suggest that the widespread, genetically diverse species act as pools for the formation of new species in a process of ongoing speciation. Our results suggest that the species concepts of some of the more widespread taxa need to be revised.

  • 4.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    A review of molecular phylogenetic studies of Rubiaceae.2009Inngår i: Annals of the Missouri Botanical Garden, ISSN 0026-6493, E-ISSN 2162-4372, Vol. 96, s. 4-26Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Rubiaceae is one of the five largest families of flowering plants with over 13,000 species. We have seen a tremendousincrease in our understanding of the phylogeny of the family through studies on molecular data during the 15-year period from1991 to 2005; some new relationships are completely unexpected and different from traditional classification. At the end of2005, ca. 50 phylogenetic reconstructions from the family had been published based on more than 4400 sequences. Moststudies are based on ITS and rbcL sequences, but 13 different markers have been used. Most sequences available in GenBank(as of 2005) are from rps16, trn(T)L-F, rbcL, and ITS. We can now see a framework of the family phylogeny with support forthree subfamilies and over 43 tribes; subfamily Cinchonoideae (Chiococceae, Cinchoneae, Guettardeae, Hamelieae, Hillieae,Hymenodictyeae, Isertieae, Naucleeae, Rondeletieae), subfamily Ixoroideae (Alberteae, Bertiereae, Coffeeae, Condamineeae,Cremasporeae, Gardenieae, Ixoreae, Mussaendeae, Octotropideae, Pavetteae, Posoquerieae, Retiniphylleae, Sabiceeae,Sipaneeae, Vanguerieae), and subfamily Rubioideae (Anthospermeae, Argostemmateae, Coussareeae, Craterispermeae,Danaideae, Gaertnereae, Knoxieae, Lasiantheae, Morindeae, Ophiorrhizeae, Paederieae, Psychotrieae, Putorieae, Rubieae,Schradereae, Spermacoceae, Theligoneae, Urophylleae), and tribe Coptosapelteae, which is placed outside the threesubfamilies. Two of these tribes, Gardenieae and Morindeae, are paraphyletic/polyphyletic. Only about half of the tribes havebeen the focus of specific investigations. However, we have seen increased interest in using Rubiaceae phylogenies for studiesof ecology, evolution, and biogeography, e.g., and also for morphological and anatomical investigations. Evolution of fruittraits, flower types, and myrmecophytism has been investigated, and biogeographic patterns for specific taxa in Africa, theCaribbean, and the Pacific have been studied. In addition, distribution of pollen types, chemical substances, and woodcharacteristics have been compared with molecular phylogenies.Key words:

  • 5.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Asterids2009Inngår i: The Timetree of life / [ed] S. B. Hedges and S. Kumar, Oxford: Oxford University Press , 2009, s. 177-187Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 6.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Linnaeus’ sexual system and flowering plant phylogeny2007Inngår i: Nordic Journal of Botany, Vol. 25, s. 5-6Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [sv]

    Carl Linnaeus brought order to the knowledge of plants and animals by arranging all known species in encyclopaedic

    works. He proposed a system of plants, the sexual system, based on the number and arrangement of male and female

    organs. His artificial sexual system has since long been replaced by ‘natural’ or phylogenetic systems but there has never

    been a comprehensive comparison of the sexual system with modern plant classification. The currently most often used

    classification of flowering plants is the APG-system. It is based on comprehensive phylogenies of flowering plants,

    reconstructed by analyses of DNA data. The APG-system covers all flowering plants which are classified in 453 families

    and these are classified in 45 orders. Most of the species were not known at time of Linnaeus. Families and orders in the

    APG-system are arranged in larger informal groups representing major branches in the flowering plant phylogenetic tree.

    Three such groups are the monocots, the rosids, and the asterids.

    I have examined all genera published in Species plantarum (1753) and classified them according to order and major

    groups in the APG-system. All classes except one, number 15 Tetradynamia, comprises groups of unrelated plants. Not

    surprisingly, the sexual system does not display what we know today about plant relationships. As is evident from this

    analysis, there is little correspondence between the sexual system and the APG-system. This does not mean that the sexual

    system has been useless or misleading. When it was introduced, it formed the basis for much intensified research and

    increased knowledge of plants.

  • 7.
    Bremer, Birgitta
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Bremer, Kåre
    Chase, Mark
    Fay, Mike
    Reveal, James
    Soltis, Douglas
    Soltis, Pamella
    Stevens, Peter
    An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III.2009Inngår i: Botanical Journal of the Linnean Society, Vol. 161, nr 2, s. 105-121Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A revised and updated classification for the families of flowering plants is provided. Many recent studies have yielded increasingly detailed evidence for the positions of formerly unplaced families, resulting in a number of newly adopted orders, including Amborellales, Berberidopsidales, Bruniales, Buxales, Chloranthales, Escalloniales, Huerteales, Nymphaeales, Paracryphiales, Petrosaviales, Picramniales, Trochodendrales, Vitales and Zygophyllales. A number of previously unplaced genera and families are included here in orders, greatly reducing the number of unplaced taxa; these include Hydatellaceae (Nymphaeales), Haptanthaceae (Buxales), Peridiscaceae

    (Saxifragales), Huaceae (Oxalidales), Centroplacaceae and Rafflesiaceae (both Malpighiales), Aphloiaceae, Geissolomataceae and Strasburgeriaceae (all Crossosomatales), Picramniaceae (Picramniales), Dipentodontaceae and Gerrardinaceae (both Huerteales), Cytinaceae (Malvales), Balanophoraceae (Santalales), Mitrastemonaceae (Ericales) and Boraginaceae (now at least known to be a member of lamiid clade). Newly segregated families for genera previously understood to be in other APG-recognized families include Petermanniaceae (Liliales), Calophyllaceae (Malpighiales), Capparaceae and Cleomaceae (both Brassicales), Schoepfiaceae (Santalales), Anacampserotaceae, Limeaceae, Lophiocarpaceae, Montiaceae and Talinaceae (all Caryophyllales) and Linderniaceaeand Thomandersiaceae (both Lamiales). Use of bracketed families is abandoned because of its unpopularity, and in most cases the broader circumscriptions are retained; these include Amaryllidaceae, Asparagaceace and Xanthorrheaceae (all Asparagales), Passifloraceae (Malpighiales), Primulaceae (Ericales) and several other smaller families. Separate papers in this same volume deal with a new linear order for APG, subfamilial namesthat can be used for more accurate communication in Amaryllidaceae s.l., Asparagaceace s.l. and Xanthorrheaceae s.l. (all Asparagales) and a formal supraordinal classification for the flowering plants. 

  • 8.
    Bremer, Birgitta
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Bremer, Kåre
    Heidari, Nahid
    Erixon, Per
    Olmstead, Richard G
    Anderberg, Arne A
    Källersjö, Mari
    Barkhordarian, Edit
    Phylogenetics of asterids based on 3 coding and 3 non-coding chloroplast DNA markers and the utility of non-coding DNA at higher taxonomic levels.2002Inngår i: Mol Phylogenet Evol, ISSN 1055-7903, Vol. 24, nr 2, s. 274-301Artikkel i tidsskrift (Annet vitenskapelig)
  • 9.
    Bremer, Birgitta
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Eriksson, Torsten
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Timetree of Rubiaceae - Phylogeny and dating the family, subfamilies and tribes2009Inngår i: International journal of plant sciences, ISSN 1058-5893, E-ISSN 1537-5315, Vol. 170, nr 6, s. 766-793Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Rubiaceae are one of the largest families of plants, with ;13,000 species. In this study, we have estimated the phylogeny for 534Rubiaceae taxa from329 generawith up to five different chloroplast regions by Bayesian analysis. It resulted in a highly resolved tree with many strongly supported nodes. There is strong support for the three subfamilies (Cinchonoideae, Ixoroideae, Rubioideae) and most of the 44 included tribes. A scaled-down data set of 173 Rubiaceae taxawas usedwith a Bayesian approach to estimate divergence times for clades classified as tribes and subfamilies. Four fossils were used as minimum age priors, one inside each subfamily and one for Rubiaceae as a whole (Faramea-type pollen, Scyphiphora pollen, Cephalanthus pusillus fruits, and Paleorubiaceophyllum eocenicum leaves). The estimated lineage (stem) divergence time for Rubiaceae is 90.4Ma. The estimated lineage divergence times for the subfamilies are 84.4 (86.6)Ma for Rubioideae, 73.1Ma for Ixoroideae, and 73.1Ma for Cinchonoideae.The estimated lineage divergence times for the tribes vary between 86.6 and 14.2Ma. Classification, relationships, geographical distribution, and age estimates are presented and discussed for all tribes.

  • 10.
    Bremer, Birgitta
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Jansen, R K
    Oxelman, B
    Backlund, M
    Lantz, H
    Kim, K J
    More characters or more taxa for a robust phylogeny--case study from the coffee family (Rubiaceae).1999Inngår i: Syst Biol, ISSN 1063-5157, Vol. 48, nr 3, s. 413-35Artikkel i tidsskrift (Annet vitenskapelig)
  • 11. Bremer, Kare
    et al.
    Friis, Else Marie
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Molecular phylogenetic dating of asterid flowering plants shows early Cretaceous diversification.2004Inngår i: Syst Biol, ISSN 1063-5157, Vol. 53, nr 3, s. 496-505Artikkel i tidsskrift (Annet vitenskapelig)
  • 12. Davis, Aaron
    et al.
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Andriambololonera, Sylvie
    Nomenclatural changes in the genus Bremeria (Rubiaceae)2011Inngår i: Blumea - Journal of plant taxonomy and plant geography, ISSN 0006-5196, E-ISSN 2212-1676, Vol. 56, nr 1, s. 4-5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Five new combinations are made in the genus Bremeria: B. arachnocarpa, B. eriantha, B. scabrella, B. landia var. holosericea, and B. landia var. stadmanii. Bremeria gerrardii is conspecific with Gaertnera phanerophlebia, and thus excluded from Bremeria. Lectotypes are designated for Mussaenda erectiloba var. scabrella, M. stadmanii, and M. trichophlebia.

  • 13. De Block, Petra
    et al.
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Janssens, Steven
    Ochoterena, Helga
    Robbrecht, Elmar
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Molecular phylogenetics and generic assessment in the tribe Pavetteae (Rubiaceae)2015Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 64, nr 1, s. 79-95Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This is the first phylogenetic study focused on the Pavetteae, one of the most species-rich and morphologically diverse tribes within the coffee family (Rubiaceae). Fifteen of the 17 currently recognized genera, represented by 85 taxa, were sequenced for rps16, trnT-F and ITS and analysed using Bayesian inference and maximum likelihood methods. The monophyly of the Pavetteae is confirmed. Four major lineages are identified, but their phylogenetic relationships are not fully resolved. The continental African genera Rutidea, Nichallea and Tennantia, the Madagascan genera Homollea and Robbrechtia, and the paleotropical genus Pavetta are monophyletic. Other genera are paraphyletic in their current circumscriptions and the following changes are made: Homolliella is placed in synonymy with Paracephaelis, and Coleactina and Dictyandra with Leptactina, resulting in four new combinations. The large paleotropical genus Tarenna is shown not to be monophyletic. In the future, the name Tarenna should not be used for continental African species. Most of these could be transferred to the hitherto monospecific genus Cladoceras, but other species might constitute altogether new genera. The relationship between the monophyletic Asian-Pacific and Madagascan Tarenna species remains unclear. The phylogeny of the Madagascan genera of the Pavetteae is largely unresolved and the largest Madagascar-centred genus Coptosperma was not recovered as monophyletic. The low resolution for the Madagascan taxa can be considered as an indication of rapid radiation. Further molecular and morphological studies are necessary to clarify the phylogeny of the Pavetteae, especially regarding the African Tarenna species and the Madagascan genera of the tribe.

  • 14. Delprete, P. G.
    et al.
    Achille, F.
    Mouly, A.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Four new combinations in Chomelia and Stenostomum (Rubiaceae, Guettardeae) from Central America, the Guianas and the Amazon Basin2010Inngår i: Blumea - Journal of plant taxonomy and plant geography, ISSN 0006-5196, E-ISSN 2212-1676, Vol. 55, nr 2, s. 164-170Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    According to current generic delimitations, supported by wood anatomy, palynology, and recent molecular phylogenies, Antirhea, traditionally treated as a Pantropical genus, is instead restricted to the Paleotropics. At the same time, the Neotropical species traditionally positioned in Antirhea should be positioned in Stenostomum. Following these definitions, Stenostomum is a genus with most of the species present in the Caribbean Region, and two species present in the Guianas, namely S. acreanum and S. guianensis, distributed throughout the Amazon Basin. In addition, according to these new generic delimitations, two species previously positioned in Guettarda and Antirhea need to be transferred to Chomelia, as C. triflora and C. ulei.

  • 15. Emmanuelsson, Erik
    et al.
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant Systematics.
    A new species of Gyrostipula (Rubiaceae, Naucleeae) from Madagascar2007Inngår i: Novon, ISSN 1055-3177, Vol. 17, nr 4, s. 421-423Artikkel i tidsskrift (Fagfellevurdert)
  • 16. Forest, Felix
    et al.
    Moat, Justin
    Baloch, Elisabeth
    Brummitt, Neil A.
    Bachman, Steve P.
    Ickert-Bond, Steffi
    Hollingsworth, Peter M.
    Liston, Aaron
    Little, Damon P.
    Mathews, Sarah
    Rai, Hardeep
    Rydin, Catarina
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Stevenson, Dennis W.
    Thomas, Philip
    Buerki, Sven
    Gymnosperms on the EDGE2018Inngår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 8, artikkel-id 6053Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Driven by limited resources and a sense of urgency, the prioritization of species for conservation has been a persistent concern in conservation science. Gymnosperms (comprising ginkgo, conifers, cycads, and gnetophytes) are one of the most threatened groups of living organisms, with 40% of the species at high risk of extinction, about twice as many as the most recent estimates for all plants (i.e. 21.4%). This high proportion of species facing extinction highlights the urgent action required to secure their future through an objective prioritization approach. The Evolutionary Distinct and Globally Endangered (EDGE) method rapidly ranks species based on their evolutionary distinctiveness and the extinction risks they face. EDGE is applied to gymnosperms using a phylogenetic tree comprising DNA sequence data for 85% of gymnosperm species (923 out of 1090 species), to which the 167 missing species were added, and IUCN Red List assessments available for 92% of species. The effect of different extinction probability transformations and the handling of IUCN data deficient species on the resulting rankings is investigated. Although top entries in our ranking comprise species that were expected to score well (e.g. Wollemia nobilis, Ginkgo biloba), many were unexpected (e.g. Araucaria araucana). These results highlight the necessity of using approaches that integrate evolutionary information in conservation science.

  • 17.
    Gehrke, Berit
    et al.
    University of Zurich, Institute for Systematic Botany.
    Bräuchler, Christian
    Department Biologie I, Systematische Botanik, LMU Munich.
    Romoleroux, Katia
    Herbario QCA, Pontificia Universidad Católica del Ecuador.
    Lundberg, Magnus
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Heubl, G
    Department Biologie I, Systematische Botanik, LMU Munich.
    Eriksson, Torsten
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Molecular phylogenetics of Alchemilla, Aphanes and Lachemilla (Rosaceae) inferred from plastid and nuclear intron and spacer DNA sequences, with comments on generic classification2008Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 47, s. 1030-1044Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Alchemilla (the lady’s mantles) is a well known but inconspicuous group in the Rosaceae, notable for its ornamental leaves and pharmaceutical properties. The systematics of Alchemilla has remained poorly understood, most likely due to confusion resulting from apomixis, polyploidisation and hybridisation, which are frequently observed in the group, and which have led to the description of a large number of (micro-) species. A molecular phylogeny of the genus, including all sections of Alchemilla and Lachemilla as well as five representatives of Aphanes, based on the analysis of the chloroplast trnL–trnF and the nuclear ITS regions is presented here. Gene phylogenies reconstructed from the nuclear and chloroplast sequence data were largely congruent. Limited conflict between the data partitions was observed with respect to a small number of taxa. This is likely to be the result of hybridisation/introgression or incomplete lineage sorting. Four distinct clades were resolved, corresponding to major geographical division and life forms: Eurasian Alchemilla, annual Aphanes, South American Lachemilla and African Alchemilla. We argue for a wider circumscription of the genus Alchemilla, including Lachemilla and Aphanes, based on the morphology and the phylogenetic relationships between the different clades.

  • 18.
    Ginter, Anna
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Phylogenetic affinities of Myrioneuron and Cyanoneuron, generic limits of the tribe Argostemmateae and description of a new Asian tribe, Cyanoneuroneae (Rubiaceae)2015Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 64, nr 2, s. 286-298Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Argostemmateae (Rubiaceae, subfam. Rubioideae) are a mostly tropical Asian group of about 200 species currently classified in four morphologically distinct genera (Argostemma, Mouretia, Mycetia, Neohymenopogon). The monophyly of the tribe and Mycetia is strongly supported by molecular data, however, the tropical Asian genus Myrioneuron, traditionally associated with Mycetia based on its berry fruits, has not previously been investigated. The Bornean and Sulawesian genus Cyanoneuron, described based on the species of Myrioneuron with drupaceous fruits, had not been sequenced. Therefore, the phylogenetic positions of Cyanoneuron and Myrioneuron within Rubiaceae and their generic status have yet to be assessed with molecular data. These genera have tentatively been placed in tribe Spermacoceae (Rubioideae). We reconstructed a robust phylogeny of Rubioideae with sequence data from five plastid regions of 176 accessions and using the Bayesian Markov chain Monte Carlo and parsimony methods. Once the positions of Cyanoneuron and Myrioneuron were revealed, a robust phylogeny of the Spermacoceae alliance was reconstructed with the combined plastid and nuclear data (nrETS, nrITS) from 61 accessions to reassess its tribal limits. Mycetia and Myrioneuron are non-monophyletic and intermixed, and formed a well-supported clade diagnosed by berry fruits. We formally transfer Myrioneuron to Mycetia (older name), and present nine new combinations in the latter genus. Cyanoneuron was resolved with high support as monophyletic, and appears to be closely related to the Chinese monogeneric tribes Foonchewieae and Dunnieae. A new tribe Cyanoneuroneae is described to accommodate Cyanoneuron. This tribe is morphologically distinct from related tribes by its stipules apically divided into multiple linear segments, condensed-cymose inflorescences and drupe-like fruits with numerous small seeds. A new key to the genera of Argostemmateae is provided.

  • 19. Groeninckx, Inge
    et al.
    Dessein, Steven
    Ochoterena, Helga
    Persson, Claes
    Motley, Timothy
    Kårehed, Jesper
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Huysmans, Suzy
    Smets, Erik
    Phylogeny of the herbaceous tribe Spermacoceae (Rubiaceae) based on plastid DNA data2009Inngår i: Annals of the Missouri Botanical Garden, ISSN 0026-6493, E-ISSN 2162-4372, Vol. 96, s. 109-132Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In its current circumscription, the herbaceous tribe Spermacoceae s.l. (Rubiaceae, Rubioideae) unites the former tribes Spermacoceae s. str., Manettieae, and the Hedyotis–Oldenlandia group. Within Spermacoceae, and particularly within the Hedyotis–Oldenlandia group, the generic delimitations are problematic. Up until now, molecular studies have focused on specific taxonomic problems within the tribe. This study is the first to address phylogenetic relationships within Spermacoceae from a tribal perspective. Sequences of three plastid markers (atpB-rbcL, rps16, and trnL-trnF) were analyzed separately as well as combined using parsimony and Bayesian approaches. Our results support the expanded tribe Spermacoceae as monophyletic. The former tribe Spermacoceae s. str. forms a monophyletic clade nested within the Hedyotis–Oldenlandia group. Several genera formerly recognized within the Hedyotis–Oldenlandia group are supported as monophyletic (Amphiasma Bremek., Arcytophyllum Willd. ex Schult. & Schult. f., Dentella J. R. Forst. & G. Forst., Kadua Cham. & Schltdl., and Phylohydrax Puff), while others appear to be paraphyletic (e.g., Agathisanthemum Klotzsch), biphyletic (Kohautia Cham. & Schltdl.), or polyphyletic (Hedyotis L. and Oldenlandia L. sensu Bremekamp). Morphological investigations of the taxa are ongoing in order to find support for the many new clades and relationships detected. This study provides a phylogenetic hypothesis with broad sampling across the major lineages of Spermacoceae that can be used to guide future species-level and generic studies.

  • 20.
    Kainulainen, Kent
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Phylogeny of Euclinia and allied genera of Gardenieae (Rubiaceae), and description of Melanoxerus, an endemic genus of Madagascar2014Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 63, nr 4, s. 819-830Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We performed molecular phylogenetic analyses of the Randia clade of the tribe Gardenieae using both plastid and nuclear DNA data. In the phylogenetic hypotheses presented, the African genera Calochone, Euclinia, Macrosphyra, Oligocodon, Pleiocoryne, and Preussiodora are resolved as a monophyletic group. Support is also found for a clade of the Neotropical genera Casasia, Randia, Rosenbergiodendron, Sphinctanthus, and Tocoyena. This Neotropical clade is resolved as sister group to the African clade in analyses of combined plastid and nuclear data. The genus Euclinia appears polyphyletic. The species described from Madagascar represent an independent lineage, the position of which is moreover found to be incongruent between datasets. Plastid and ribosomal DNA data support a sister-group relationship to the mainland African clade, whereas the low-copy nuclear gene Xdh supports a closer relationship to the Neotropical genera. The phylogenetic reconstructions also indicate that Casasia and Randia are not monophyletic as presently circumscribed. A taxonomic proposal is made for the recognition of the Malagasy taxon at generic level as Melanoxerus.

  • 21.
    Kainulainen, Kent
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Phylogenetic relationships and new tribal delimitations in subfamily Ixoroideae (Rubiaceae)2013Inngår i: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 173, nr 3, s. 387-406Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Subfamily Ixoroideae is one of three major lineages in Rubiaceae, with approximately 4000 species. Previous molecular phylogenetic studies have indicated that many genera and tribes previously placed in other subfamilies are better considered as part of Ixoroideae. However, the internal resolution and clade support have generally been low, and several genera found to be nested in the subfamily do not appear to be associated with any described tribe. In order to resolve the phylogeny and assess the tribal delimitations in the expanded Ixoroideae, phylogenetic reconstructions were performed using Bayesian and parsimony analyses of six plastid DNA regions and a broad sampling of genera from all tribes of the subfamily. In the inferred phylogenetic hypotheses, the tribal relationships were mostly well supported, with Ixoroideae consisting of the Coffeeae and the Vanguerieae alliances as sister groups and a grade comprising Condamineeae, Henriquezieae, Posoquerieae, Retiniphylleae, Sipaneeae and the genus Steenisia. A revised tribal classification, including the description of five new tribes, Airospermeae, Augusteae, Scyphiphoreae, Steenisieae and Trailliaedoxeae, is provided.

  • 22. Khan, Saleh
    et al.
    Razafimandimbison, Sylvain G
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Liede-Schumann, Sigrid
    Phylogeny and biogeography of Virectaria based on molecular and morphological data2008Inngår i: Plant Systematics and Evolution, Vol. 275, s. 43-58Artikkel i tidsskrift (Fagfellevurdert)
  • 23. Khan, Saleh
    et al.
    Razafimandimbison, Sylvain G
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Liede-Schumann, Sigrid
    Sabiceeae and Virectarieae : one or two tribes? – New tribal and generic limits of Sabiceeae (Rubiaceae) and biogeographical origin of Sabicea s.l.2008Inngår i: Taxon, Vol. 57, s. 7-23Artikkel i tidsskrift (Fagfellevurdert)
  • 24.
    KM, Åberg
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.).
    RJO, Torgrip
    Institutionen för analytisk kemi.
    J, Kolmert
    I, Schuppe-Koistinen
    J, Lindberg
    Feature detection and alignment of hyphenated chromatographic-mass spectrometric data. Extraction of Pure Ion Chromatograms using Kalman tracking2008Inngår i: J Chromatogr A, Vol. 1192, nr 1, s. 139-146Artikkel i tidsskrift (Fagfellevurdert)
  • 25.
    Krüger, Åsa
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Löfstrand, Stefan
    Smedmark, Jenny
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Historical biogeography of Hymenodictyeae and Naucleeae, two Paleotropic sister clades in Cinchonoideae, RubiaceaeManuskript (preprint) (Annet vitenskapelig)
  • 26.
    Kårehed, Jesper
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Växtsystematik.
    Alseuosmiaceae2007Inngår i: Volume VIII, Flowering Plants. Eudicots: Asterales, Springer-Verlag, Berlin Heidelberg , 2007, s. 7-12Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 27.
    Kårehed, Jesper
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Växtsystematik.
    Argophyllaceae2007Inngår i: Volume VIII, Flowering Plants. Eudicots: Asterales, Springer-Verlag, Berlin Heidelberg , 2007, s. 13-18Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 28.
    Kårehed, Jesper
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Växtsystematik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Växtsystematik.
    The systematics of Knoxieae (Rubiaceae) - molecular data and their taxonomic consequences2007Inngår i: Taxon, ISSN 0040-0262, Vol. 56, nr 4, s. 1051-1076Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The tribe Knoxieae consists of genera formerly included in (at least) four tribes of the Rubiaceae (the coffee family). Apart from Knoxia itself, which is mainly Indomalesian, the group is from Africa and Madagascar. Most genera are herbaceous or shrubby, but small trees are also present. They generally have fimbriate, colleter-tipped stipules and five-merous flowers with unequal calyx lobes. We present a molecular phylogeny of the group (based on two chloroplast markers, rps16 and trnT-F, and the nuclear ITS) and discuss the morphological support for the resulting groups and the taxonomic consequences of the phylogeny. Two hundred and sixty-one new sequences from 90 species have been obtained. Of the 19 genera of the Knoxieae, all but three (two monotypic and one with two species) are represented. The genera Calanda, Chlorochorion, Neopentanisia, and Paraknoxia are merged with Pentanisia. Pentas is shown to be not monophyletic and is split into the new genera Phyllopentas, Dolichopentas, and Rhodopentas. We also suggest the Pentas subgenera Megapentas and Chamaepentadoides be included in Chamaepentas. The genus Carphalea is also shown to be not monophyletic and for the African members of the genus (section Dirichletia) the name Dirichletia should be used. Placopoda is suggested to be merged with Dirichletia. Triainolepis is enlarged to include Paratriaina and Thyridocalyx. The tribal position of Lathraeocarpa is discussed. Twenty-nine new combinations for species and seven for infraspecific taxa are made. A key to the genera of Knoxieae is provided.

  • 29. Kårehed, Jesper
    et al.
    Groeninckx, Inge
    Dessein, Steven
    Motley, Timothy J
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    The phylogenetic utility of chloroplast and nuclear DNA markers and the phylogeny of the Rubiaceae tribe Spermacoceae.2008Inngår i: Mol Phylogenet Evol, ISSN 1095-9513, Vol. 49, nr 3, s. 843-66Artikkel i tidsskrift (Annet vitenskapelig)
  • 30. Lantz, Henrik
    et al.
    Klackenberg, Jens
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant systematics.
    Mouly, Arnaud
    Three new species of Vanguerieae (Rubiaceae)2007Inngår i: Adansonia, ISSN 1280-8571, Vol. 29, nr 1, s. 129-136Artikkel i tidsskrift (Fagfellevurdert)
  • 31. Lorence, David H.
    et al.
    Wagner, Warren L.
    Mouly, Arnaud
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant Systematics.
    Florence, Jacques
    Revision of Ixora (Rubiaceae) in the Marquesas Islands (French Polynesia)2007Inngår i: Botanical Journal of the Linnean Society, Vol. 155, s. 581-597Artikkel i tidsskrift (Fagfellevurdert)
  • 32.
    Lundberg, Magnus
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Töpel, Mats
    Gothenburg University, Department of Environmental Sciences.
    Eriksen, Bente
    Gothenburg University, Department of Environmental Sciences.
    Nylander, Johan
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Eriksson, Torsten
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Allopolyploidy in Fragariinae (Rosaceae): Comparing four DNA sequence regions, with comments on classification2009Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 51, nr 2, s. 269-280Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Potential events of allopolyploidy may be indicated by incongruences between separate phylogenies based on plastid and nuclear gene sequences. We sequenced two plastid regions and two nuclear ribosomal regions for 34 ingroup taxa in Fragariinae (Rosaceae), and six outgroup taxa. We found five well supported incongruences that might indicate allopolyploidy events. The incongruences involved Aphanes arvensis, Potentilla miyabei, Potentilla cuneata, Fragaria vesca/moschata, and the Drymocallis clade. We evaluated the strength of conflict and conclude that allopolyploidy may be hypothesised in the four first cases. Phylogenies were estimated using Bayesian inference and analyses were evaluated using convergence diagnostics. Taxonomic implications are discussed for genera such as Alchemilla, Sibbaldianthe, Chamaerhodos, Drymocallis and Fragaria, and for the monospecific Sibbaldiopsis and Potaninia that are nested inside other genera. Two orphan Potentilla species, P. miyabei and P. cuneata are placed in Fragariinae. However, due to unresolved topological incongruences they are not reclassified in any genus.

  • 33.
    Löfstrand, Stefan D.
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). University of Vienna, Austria.
    Krüger, Åsa
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Phylogeny and Generic Delimitations in the Sister Tribes Hymenodictyeae and Naucleeae (Rubiaceae)2014Inngår i: Systematic Botany, ISSN 0363-6445, E-ISSN 1548-2324, Vol. 39, nr 1, s. 304-315Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Hymenodicteae-Naudeeae clade is a predominantly Paleotropical group with 220 species in 28 genera. The phylogertetic relationships and generic limits within Naucleeae have previously been assessed using combined molecular-morphological data, however the status of some genera remains questionable. The evolutionary relationships within Hymenodictyeae have never been investigated before. We performed phylogenetic analyses of the Hymenodictyeae-Naucleeae clade using nuclear [nrETS; nrITS] and chloroplast [ndhF; rbcL; rps16; trnT-F] data and a large sampling of both tribes. Our study supports the monophyly of the tribes, all subtribes of Naucleeae (Adininae, Breoniinae, Cephalanthinae, Corynantheinae, Mitragyninae, Naucleinae, and Uncariinae), and the Hymenodictyeae genera Hymenodictyon and Paracorynanthe. In Naucleeae, the monotypic genera Adinauclea, Metadina, and Pertusadina are nested within Adina, Mitragyna within Fleroya, Ludekia, Myrmeconauclea, and Ochreinauclea within Neonauclea, and Burttdavya and Sarcocephalus within Nauclea. Corynanthe and Pausinystalia are mutually paraphyletic. We provisionally maintain the current generic status of Neonauclea and its allied genera, pending further study. In sum, we recognize 17 genera in Naucleeae: Adina s. l., Breonadia, Breonia, Cephalanthus, Corynanthe s. l., Diyaminauclea, Gyrostipula, Janotia, Khasiaclunea, Ludekia, Mitragyna s. l., Myrmeconauclea, Nauclea s. l., Neolamarckia, Neonauclea, Ochreinauclea, and Uncaria. Five new combinations were made: Adina euryncha, Adina malaccensis, Corynanthe lane-poolei subsp. iturense, Corynanthe talbotii, and Nauclea nyasica.

  • 34.
    Löfstrand, Stefan
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Krüger, Åsa
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Rzafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Phylogeny and generic delimitations in the sister tribes Hymenodictyeae and Naucleeae (Rubiaceae).Manuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    The Hymenodictyeae-Naucleeae clade is a predominantly Paleotropical group with 220 species in 28 genera. The phylogenetic relationships and generic limits within Naucleeae have previously been assessed using combined molecular-morphological data, however the status of some genera remains questionable. The evolutionary relationships within Hymenodictyeae have never been investigated before. We performed phylogenetic analyses of the Hymenodictyeae-Naucleeae clade using nuclear [nrETS; nrITS] and chloroplast [ndhF; rbcL; rps16; trnT-F] data and a large sampling of both tribes. Our study supports the monophyly of the tribes, all subtribes of Naucleeae (Adininae, Breoniinae, Cephalanthinae, Corynantheinae, Mitragyninae, Naucleinae, and Uncariinae), and the Hymenodictyeae genera Hymenodictyon and Paracorynanthe. In Naucleeae, the monotypic genera Adinauclea, Metadina, and Pertusadina are nested within Adina, Mitragyna within Fleroya, Ludekia, Myrmeconauclea, and Ochreinauclea within Neonauclea, and Burttdavya and Sarcocephalus within Nauclea. Corynanthe and Pausinystalia are mutually paraphyletic. We provisionally maintain the current generic status of Neonauclea and its allied genera, pending further study. In sum, we recognize 17 genera in Naucleeae: Adina s.l., Breonadia, Breonia, Cephalanthus, Corynanthe s.l., Diyaminauclea, Gyrostipula, Janotia, Khasiaclunea, Ludekia, Mitragyna s.l., Myrmeconauclea, Nauclea s.l., Neolamarckia, Neonauclea, Ochreinauclea, and Uncaria. Five new combinations were made: Adina euryncha, Adina malaccensis, Corynanthe lane-poolei subsp. iturense, Corynanthe talbotii, and Nauclea nyasica.

  • 35.
    Manns, Ulrika
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae)2010Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 56, nr 1, s. 21-39Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This study focuses on the subfamily Cinchonoideae s.s. utilizing information from six DNA markers and 206 taxa. The nine tribes (i.e. Cinchoneae, Chiococceae s.l., Guettardeae s.s., Hamelieae, Hillieae, Hymenodictyeae, Isertieae, Naucleeae s.l., and Rondeletieae s.s.) are resolved in four major lineages, all strongly supported and relationships between them are resolved. The tropical American Cinchoneae and Isertieae constitute the first diverging lineage within the subfamily, followed by the predominantly paleotropical Naucleeae and Hymenodictyeae. The remaining two lineages primarily include neotropical taxa: Rondeletieae and Guettardeae are sister clades in the first, while the second comprises Chiococceae, Hamelieae, and Hillieae. Additionally, taxonomic placement of several genera, not previously included in molecular analyses, were confirmed: Acunaeanthus belongs in Rondeletieae, Ottoschmidtia in Guettardeae, Nernstia in Chiococceae, Pinarophyllon, Plocaniophyllon, and Syringantha in Hamelieae, and Balmea in Hillieae. Colleteria, of previously unknown taxonomic position, is resolved as sister to Chione.

  • 36.
    Manns, Ulrika
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Wikström, Niklas
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Taylor, Charlotte M.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    HISTORICAL BIOGEOGRAPHY OF THE PREDOMINANTLY NEOTROPICAL SUBFAMILY CINCHONOIDEAE (RUBIACEAE): INTO OR OUT OF AMERICA?2012Inngår i: International journal of plant sciences, ISSN 1058-5893, E-ISSN 1537-5315, Vol. 173, nr 3, s. 261-289Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Rubiaceae is the fifth largest plant family and is found on all continents, mostly in (sub-)tropical regions. Despite a large representation of Rubiaceae in the Paleotropics, the subfamily Cinchonoideae has its primary distribution in the Neotropics. Within the Cinchonoideae only two tribes, Naucleeae and Hymenodictyeae, have Paleotropical centers of distribution. In this study, we used information from five chloroplast DNA markers and fossil data to investigate when the subfamily was established in the Neotropics as well as major subsequent dispersal events within and out of the Neotropics and within the Paleotropics. Our results show that the ancestor of Cinchonoideae and its sister, Ixoroideae, was present in South America during the Late Cretaceous. Dispersal to Central America was estimated to occur during the Early Paleocene, and subsequent dispersals to the Caribbean islands occurred during the Oligocene-Miocene. The ancestor of Naucleeae and Hymenodictyeae dispersed to the Paleotropics no later than the Eocene, and the findings of fossils of Cephalanthus in Europe and western Siberia support its presence in the boreotropical forests. Long-distance, trans-Pacific dispersal during the Miocene was indicated for the remaining Paleotropical Cinchonoideae.

  • 37.
    Mouly, Arnaud
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Systematic group.
    Systématique de la tribu des Ixoreae A. Gray (Rubiaceae) : phylogénie, biogéographie et taxonomie: Résumé de thèse d´Etat2008Inngår i: Acta Botanica Gallica, Vol. 155, nr 3, s. 457-464Artikkel i tidsskrift (Fagfellevurdert)
  • 38.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant Systematics.
    Achille, Frédéric
    The enigmatic Rhopalobrachium fragrans transferred to Cyclophyllum (Rubiaceae)2007Inngår i: Systematic Botany, Vol. 32, nr 4, s. 883-887Artikkel i tidsskrift (Fagfellevurdert)
  • 39.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Systematic.
    De Block, Petra
    A new species of Coptosperma (Rubiaceae) from the Comoro Islands and Madagascar2008Inngår i: Systematics and Geography of Plants, ISSN 1374-7886, Vol. 78, s. 145-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In the Comoro Islands, Rubiaceae are one of the largest families of flowering plants, represented by c. twenty genera and seventy species. Among these genera, Coptosperma (Pavetteae, Ixoroideae) is represented by two widely distributed species, also occurring in Madagascar and

    continental Africa, and a third species new to science. Coptosperma mitochondrioides Mouly & De Block possesses large stipules of the “bec de canard” type and ribbed fruits. While this type of stipule is typical for many Malagasy Coptosperma species, ribbed fruits are very rare within the genus. Within the Comoros archipelago C. mitochondrioides is restricted to Mayotte, but the species is also known from northern Madagascar. The new species is described and illustrated and a key to the species of Coptosperma occurring in the Comoros is provided.

  • 40.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant Systematics.
    Hoang, Nathalie
    Une nouvelle espèce d'Ixora (Rubiaceae) cauliflore de Nouvelle-Calédonie2007Inngår i: Adansonia: sér. 3, Vol. 29, nr 1, s. 123-128Artikkel i tidsskrift (Fagfellevurdert)
  • 41.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Kainulainen, Kent
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Persson, Claes
    Davis, Aaron P.
    Wong, Khoon Meng
    Razafimandimbison, Sylvain G.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Phylogenetic structure and clade circumscriptions in the Gardenieae complex (Rubiaceae)2014Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 63, nr 4, s. 801-818Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this study we investigate the large and diverse Rubiaceae-Gardenieae and closely related tribes Bertiereae, Coffeeae, Cremasporeae, Octotropideae, and Pavetteae. Some of the tribes or groups have been shown to be monophyletic and strongly supported, but the phylogeny of this large complex is still far from being satisfactorily elucidated particularly for Gardenieae, both in terms of intertribal relationships as well as tribal delimitations. We reconstruct the phylogeny of the complex using an extensive sampling of 108 genera and five plastid DNA regions. Phylogenetic relationships demonstrate that Gardenieae sensu Andreasen & Bremer is polyphyletic, as Burchellia, Didymosalpinx, Monosalpinx, and Mantalania are closer to Octotropideae-Cremasporeae. In addition, Pavetteae and the investigated members of Aulacocalyceae are nested in a supported but partially unresolved Gardenieae-Pavetteae clade. Within this clade, several strongly supported groups are resolved: an Aidia group, an Alibertia group, a Gardenia group, Pavetteae including Pelagodendron, a Porterandia group, a Randia group, a Rothmannia group (including Aulacocalyx and Heinsenia), a Sherbournia group, and the two isolated genera Massularia and Schumanniophyton. The latter genus presented a high rate of genetic substitutions, which resulted in perturbations of the phylogenetic reconstruction. A revised tribal circumscription is given for Gardenieae, the Alibertia group is recognized at tribal level as an emended Cordiereae, and a new tribe, Sherbournieae, is described to accommodate the members of the Sherbournia group.

  • 42.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Systematic group.
    Pisivin, Céline
    Rare and threatened new endemic Ixora (Rubiaceae) from New Caledonia2007Inngår i: Nordic Journal of Botany, Vol. 25, s. 14-19Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Ixora clarae and I. elisae (Rubiaceae) are two endemic species described from New Caledonia. Ixora clarae is easily recognised by its (1-)3-flowered inflorescences, made up by thick and large flowers embedded in a calyculus. It is known from a few specimens collected on the nearest mountains by Nouméa, and is considered as endangered (EN). Ixora elisae is remarkable for its very enlarged campanulate calyx-limb. The latter one, from the Isle of Pines and Lifou, known by just two herbarium collections, is probably on its way to disappear in nature. Consequently, it is proposed to a critically endangered (CR) classification.

  • 43.
    Mouly, Arnaud
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Puff, Christian
    Paederia ntiti sp nov (Rubiaceae) from the Comoros and notes on the affinities of Comorian rubiaceous climbers and lianas2010Inngår i: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, Vol. 28, nr 3, s. 262-266Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A new species of Paederia L. (Rubiaceae, Rubioideae, Paederieae), P. ntiti Mouly & Puff, endemic to the Comoros (Grande Comore, Anjouan and Mayotte) and occurring in natural elevated forests is described and illustrated. Its conservation status is evaluated and the species is rated 'Endangered' (EN). A key to the Paederia taxa of the Comorian archipelago is provided. Also included are notes on the three other species of rubiaceous climbers and lianas known from the Comoros: Paederia bojeriana (A. Rich. ex DC.) Drake, Danais comorensis Drake and Uncaria africana G. Don.

  • 44. Mouly, Arnaud
    et al.
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant Systematics.
    Achille, Frédéric
    Haevermans, Thomas
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen. Plant systematics.
    Phylogenetic placement of Rhopalobrachium (Rubiaceae: Ixoroideae): evidence from molecular (rps16 and trnT-F) and morphological data2007Inngår i: Systematic Botany, ISSN 0363-6445, Vol. 32, nr 4, s. 872-882Artikkel i tidsskrift (Fagfellevurdert)
  • 45. Mouly, Arnaud
    et al.
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Florence, Jacques
    Jérémie, Joel
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Paraphyly of Ixora and new tribal delimitation of Ixoreae (Rubiaceae): Inference from combined chloroplast (rps16, rbcL and trnT-F) sequence data2009Inngår i: Annals of the Missouri Botanical Garden, Vol. 96, s. 146-160Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We performed phylogenetic analyses of DNA sequences of three chloroplast markers: rbcL, rps16, and trnT-F, to rigorously test the monophyly of competing circumscriptions of the tribe Ixoreae. Several genera traditionally or currently associated with the type genus Ixora L. were included in the analyses. Ixora as currently circumscribed appears paraphyletic, as many other genera are nested within it with strong support: Captaincookia N. Halle´, Doricera Verdc., Hitoa Nadeaud, Myonima Comm. ex Juss., Sideroxyloides Jacq., Thouarsiora Homolle ex Are`nes, and Versteegia Valeton. Further, Aleisanthia Ridl., Aleisanthiopsis Tange, and Greenea Wight & Arn. are more closely related to Ixora and allies than the monotypic genus Scyphiphora C. F. Gaertn. Consequently, Ixoreae fide Andreasen and Bremer (2000) is not monophyletic without an exclusion of Scyphiphora. Ixoreae fide Robbrecht and Manen (2006) is not monophyletic unless Captaincookia and Doricera are included. The monophyly of a morphologically heterogeneous Ixoreae alliance consisting of Ixora and its relatives Aleisanthia, Aleisanthiopsis, and Greenea is, however, strongly supported. In order to recognize monophyletic and morphologically consistent groups, we adopt a narrow circumscription of Ixoreae (including Bemsetia Raf., Captaincookia, Charpentiera Vieill., Doricera, Hitoa, Ixora, Myonima, Pancheria Montrouz., Sideroxyloides, Thouarsiora, Tsiangia But, H. H. Hsue & P. T. Li, and Versteegia), and two new tribes are erected for Aleisanthia + Aleisanthiopsis and Greenea, respectively. The Indo-Malesian Aleisanthieae and the pantropical Ixoreae s. str. are sister groups, and the Southeast Asian Greeneeae is sister to the Ixoreae–Aleisanthieae clade.

  • 46. Mouly, Arnaud
    et al.
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Khodabandeh, Anbar
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen.
    Phylogeny and classification of the species-rich pantropical showy genus Ixora (Rubiaceae-Ixoreae) with indications of geographical monophyletic units and hybrids2009Inngår i: American Journal of Botany, ISSN 0002-9122, E-ISSN 1537-2197, Vol. 96, s. 686-706Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Species-rich genera often have various conflicting circumscriptions from independent regional fl ora treatments. Testing the monophyly of these groups of plants is an important step toward the establishment of a phylogenetic classifi cation. The genus Ixora of the tribe Ixoreae in the subfamily Ixoroideae (coffee family or Rubiaceae) is a species-rich pantropical genus of ca. 500 species. Phylogenetic analyses of Ixoreae based on combined sequence data from one nuclear (nrETS) and two chloroplast ( rps16 and trnT-F ) markers reveal the paraphyly of Ixora as presently delimited and also show that the tribe can be subdivided into three major

    clades: the Mascarene/neotropical/Malagasy/African clade, the Pacifi c clade, and the Asian clade. Given the lack of morphological synapomorphies supporting the different Ixora clades and the morphological consistency of the ingroup taxa, we propose a broad circumscription of Ixora including all its satellite genera: Captaincookia , Doricera , Hitoa , Myonima , Sideroxyloides , Thouarsiora, and Versteegia . The current infrageneric classifi cation of Ixora is not supported. The different Ixora subclades represent geographical units. Nuclear and chloroplast tree topologies were partially incongruent, indicating at least four potential natural hybridization events. Other confl icting positions for the cultivated species are most likely due to anthropogenic hybridization.

  • 47. Neupane, Suman
    et al.
    Dessein, Steven
    Wikström, Niklas
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Lewis, Paul O.
    Long, Chunlin
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien). Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.
    Motley, Timothy J.
    The Hedyotis-Oldenlandia complex (Rubiaceae: Spermacoceae) in Asia and the Pacific: Phylogeny revisited with new generic delimitations2015Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 64, nr 2, s. 299-322Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Hedyotis and related genera (here called the Hedyotis-Oldenlandia complex) are highly debated groups in the Rubiaceae family with no consensus to date on their generic delimitations. The present study focuses on Asian-Pacific taxa from these groups and aims at resolving taxonomic inconsistencies by describing monophyletic genera within the complex. The generic circumscriptions presented in our study are based on the phylogenetic trees of nuclear (ITS, ETS) and plastid (petD, rps16) sequence data inferred using Bayesian and maximum likelihood methods. Morphological key features of the group such as habit, fruit type, seed form, and pollen type are studied and compared with the phylogeny to characterize the clades. Based on these results, the Asian-Pacific members are placed in 14 monophyletic groups across the Hedyotis-Oldenlandia complex. Of these, we accept and circumscribe 13 monophyletic genera: Debia, Dentella, Dimetia, Edrastima, Exallage, Hedyotis, Involucrella, Kadua, Kohautia, Leptopetalum, Neanotis, Oldenlandia, and Scleromitrion. Two of these, Debia and Involucrella, are here described as new genera.

  • 48. Novotny, Vojtech
    et al.
    Basset, Yves
    Miller, Scott E
    Weiblen, George D
    Bremer, Birgitta
    Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vet. Ak.). Botaniska institutionen.
    Cizek, Lukas
    Drozd, Pavel
    Low host specificity of herbivorous insects in a tropical forest.2002Inngår i: Nature, ISSN 0028-0836, Vol. 416, nr 6883, s. 841-4Artikkel i tidsskrift (Annet vitenskapelig)
  • 49.
    Persson, Nannie L.
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Rydin, Catarina
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Phylogenetic relationships of the 'Briza complex' to other members of the subfamily Pooideae (Poaceae)2016Inngår i: Plant Ecology and Evolution, ISSN 2032-3913, E-ISSN 2032-3921, Vol. 149, nr 2, s. 216-227Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background and aims - The species of the 'Briza complex' (Pooideae, Poaceae) are distributed in South America and Eurasia. They are relatively well-studied morphologically and have a complex taxonomic history, but only a few phylogenetic studies have been conducted using molecular data. Monophyly of the complex, which is based on presence of 'brizoid' spikelets, has not been questioned and sampling strategies in previous studies have prevented assessments thereof. Methods - We investigate phylogeny and node ages in the Briza complex and test monophyly of the group using nuclear and chloroplast data. Extensive sampling from the Briza complex and putatively related species in the subfamily Pooideae is employed. Key results - Despite morphological similarity among species, the Briza complex is polyphyletic. Members were found in three different Glades, showing the South American species, the Eurasian species and Briza humilis to be distinct groups. The South American and the Eurasian clades originated about 11 and 13 million years ago, respectively. Briza humilis diverged from Phleum (or a related genus) about 10 million years ago, whereas its crown clade is from the Pliocene-Pleistocene border. The almost simultaneous origins of these clades in the mid-Miocene coincide with temporal estimates of major diversification in grasses and formation of grassland habitats. Conclusions - Based on our results, we support the names Chascolytrum for the South American Glade and Briza for the Eurasian clade. For the Briza humilis clade, we propose the name Brizochloa. The parallel evolution of (seemingly) similar 'brizoid' spikelets in the Pooideae is surprising; however, studies have shown that floral morphology can alter dramatically by one-step mutations, causing evolutionarily distantly related species to have similar appearance. Our findings may hopefully inspire new morphological investigations of the species of the former Briza complex, as well as other poorly studied and potentially polyphyletic genera, such as Deschampsia and Echinopogon.

  • 50.
    Razafimandimbison, Sylvain
    Stockholms universitet, Naturvetenskapliga fakulteten, Botaniska institutionen. Stockholms universitet, Naturvetenskapliga fakulteten, Bergianska botaniska trädgården (tills m Kungl. Vetenskapsakademien).
    Molecular phylogenetics and generic assessment in the tribe Morindeae (Rubiaceae–Rubioideae): How to circumscribe Morinda L. to be monophyletic?2009Inngår i: Molecular Phylogenetics and Evolution, Vol. 52, s. 879-886Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Most of the species of the family Rubiaceae with flowers arranged in head inflorescences are currently classified in three distantly related tribes, Naucleeae (subfamily Cinchonoideae) and Morindeae and Schradereae (subfamily Rubioideae). Within Morindeae the type genus Morinda is traditionally and currently circumscribed based on its head inflorescences and syncarpous fruits (syncarps). These characters are also present in some members of its allied genera, raising doubts about the monophyly of Morinda. We perform Bayesian phylogenetic analyses using combined nrETS/nrITS/trnT-F data for 67 Morindeae taxa and five outgroups from the closely related tribes Mitchelleae and Gaertnereae to rigorously test the monophyly of Morinda as currently delimited and assess the phylogenetic value of head inflorescences and syncarps in Morinda and Morindeae and to evaluate generic relationships and limits in Morindeae. Our analyses demonstrate that head inflorescences and syncarps in Morinda and Morindeae are evolutionarily labile. Morinda is highly paraphyletic, unless the genera Coelospermum, Gynochthodes, Pogonolobus, and Sarcopygme are also included. Morindeae comprises four well-supported and morphologically distinct major lineages: Appunia clade, Morinda clade (including Sarcopygme and the lectotype M. royoc), Coelospermum clade (containing Pogonolobus and Morinda reticulata), and Gynochthodes–Morinda clade. Four possible alternatives for revising generic boundaries are presented to establish monophyletic units. We favor the recognition of the four major lineages of Morindeae as separate genera, because this classification reflects the occurrence of a considerable morphological diversity in the tribe and the phylogenetic and taxonomic distinctness of its newly delimited genera.

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