Change search
ReferencesLink to record
Permanent link

Direct link
Floral Structure and Organization in Platanaceae
Stockholm University, Faculty of Science, Department of Botany.
2009 (English)In: International journal of plant sciences, ISSN 1058-5893, Vol. 170, no 2, 210-225 p.Article in journal (Refereed) Published
Abstract [en]

Developing and mature inflorescences and flowers of several representatives of Platanus were studied to clarify various aspects of floral structure and organization. Special attention was given to perianth differentiation. Extant Platanaceae are monoecious with unisexual flowers aggregated into compact, spherical inflorescence heads. Development of hairs in a basipetal direction subdivides the undifferentiated inflorescence surface into floral zones. Development of both male and female flowers of Platanus 3 hispanica begins with the initiation of a perianth whorl. Thereafter, the reproductive organs emerge on the floral apex: stamens in male flowers, staminodes and carpels in female flowers. The last organs to appear in both sexes are the small organs located between perianth and androecium. At anthesis, in both male and female flowers, organs of the first whorl are inconspicuous, scalelike, and only two to three cell layers thick. Alternating with these first thin organs is a whorl of short but fleshy organs. These second-whorl organs are basally united with the stamens, forming a short androecial tube. They also show some structural similarities with stamens. These features support the hypothesis that the second-whorl organs are of androecial (staminodial) origin. This hypothesis is further supported by the fossil record, where, in some taxa, second-whorl organs are particularly similar to stamens, as well as by morphological comparisons with flowers of Proteaceae.

Place, publisher, year, edition, pages
2009. Vol. 170, no 2, 210-225 p.
Keyword [en]
basal eudicots, flower development, flower structure, fossil flowers, merosity, Platanaceae, Platanus, perianth, Proteales
National Category
URN: urn:nbn:se:su:diva-60371DOI: 10.1086/595288ISI: 000263328500008OAI: diva2:435679
authorCount :2Available from: 2011-08-19 Created: 2011-08-16 Last updated: 2011-08-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Botany
In the same journal
International journal of plant 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: 23 hits
ReferencesLink to record
Permanent link

Direct link