Change search
ReferencesLink to record
Permanent link

Direct link
Diversity and evolution of floral structure among early diverging lineages in the Ericales
Stockholm University, Faculty of Science, Department of Botany.
2010 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, Vol. 365, no 1539, 437-448 p.Article in journal (Refereed) Published
Abstract [en]

This is a combination of review and original data on floral structure and diversity in the two earliest diverging lineages of the Ericales, i.e. the balsaminoids, comprising Balsaminaceae, Marcgraviaceae and Tetrameristaceae, and the polemonioids, comprising Fouquieriaceae and Polemoniaceae. Each clade is strongly supported in molecular studies, while structural synapomorphies have largely been lacking. For the balsaminoid families, we compare floral morphology, anatomy and histology among selected taxa and find that the entire clade is strongly supported by the shared presence of nectariferous tissue in the floral periphery, thread-like structures on anthers, truncate stigmas, secretion in the ovary, as well as mucilage cells, raphides and tannins in floral tissues. A possible sister group relationship between Balsaminaceae and Tetrameristaceae is supported by the shared presence of post-genital fusion of filaments and ovary and a star-shaped stylar canal. For polemonioids, we document unexpected diversity of floral features in Polemoniaceae, partly providing structural links to Fouquieriaceae. Features include cochlear and quincuncial corolla aestivation, connective protrusions, ventrifixed anthers and nectariferous tissue in the base of the ovary. In addition, we outline future directions for research on floral structure in the Ericales and briefly discuss the general importance of structural studies for our understanding of plant phylogeny and evolution.

Place, publisher, year, edition, pages
2010. Vol. 365, no 1539, 437-448 p.
Keyword [en]
asterids, Balsaminaceae, floral diversity, Marcgraviaceae, Polemoniaceae, Tetrameristaceae
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-68191DOI: 10.1098/rstb.2009.0247ISI: 000273232800008OAI: diva2:472154
authorCount :3Available from: 2012-01-03 Created: 2012-01-03 Last updated: 2012-01-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Botany
In the same journal
Philosophical Transactions of the Royal Society of London. Biological Sciences
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 19 hits
ReferencesLink to record
Permanent link

Direct link