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Systematics Section / ASPT

Stanton, Daniel [1], Van Ee, Benjamin [1], Berry, Paul E. [1].

Revisiting the circumscription of Croton Section Geiseleria using ITS and trnL-F data.

In the first modern synopsis of Croton(Euphorbiaceae sensu stricto), Webster recognized 40 section using morphological criteria. More recently, Berry et al. presented a preliminary molecular phylogeny of the genus. Here we present a more thorough molecular circumscription of the Neotropical section Geiseleria using ITS and trnL-F data. Sectional monophyly is maintained only by the incorporation of members of sections Podostachys, Octolobium and Ocalia. Some of the molecular clades also reflect geographical patterning of distribution, including a Mexican clade and a widespread Neotropical clade.


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1 - University of Wisconsin Madison, Department of Botany, Birge Hall, 430 Lincoln Drive, Madison, Wisconsin, 53706-1381, USA

Keywords:
Euphorbiaceae
Croton
Geiseleria
molecular phylogenetics
ITS
trnL-F.

Presentation Type: Oral Paper
Session: 44-4
Location: Salon G - Austin Grand Ballroom/Hilton
Date: Wednesday, August 17th, 2005
Time: 8:45 AM
Abstract ID:109


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