Systematics/Phytogeography / Taxonomie/ Section
Keeley, Sterling C. , Bunwong, Sukhonthip .
Preliminary phylogenetic relationships in Thai Vernonieae (Compositae).
The large and widespread tribe Vernonieae (Compositae) is well represented in Thailand with several endemic genera as well as numerous species (>50) of the widespread genus Vernonia. Relationships among these taxa are poorly understood, in large part due to the highly variable and overlapping nature of most morphological characters. Similarly, relationships to other Old World Vernonieae are largely unknown. In this study we explore the phylogenetic relationships among a selection of Thai Vernonieae using sequences from chloroplast (trnLc-f, ndhF) and nuclear (ITS) DNA. Preliminary data support removal of a number of taxa from Vernonia, as suggested by Robinson (1999). Relationships with other southeast Asian Vernonieae are not well resolved. The results so far support the hypothesis that southeast Asian species represent a separate radiation from other Old World Vernonieae.
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1 - University of Hawaii, Department of Botany, 3190 Maile Way, Room 101, Honolulu, Hawaii, 96822-2279, USA
2 - Khon Khaen University, Biology, Khon Khaen, Thailand 40002, University of Hawaii, Department of Botany, 3190 Maile Way, Room 101, Honolulu, HI, 96822, USA
Presentation Type: Poster:Posters for Sections
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM