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Abstract Detail



Systematics Section/ASPT

Rein, Angela [1], Fishbein, Mark [2].

Turning Vines into Trees: Phylogenetic Analysis of American Milkweed Vines (Apocynaceae, Gonolobinae).

Milkweed subtribe Gonolobinae is diverse (450 spp.) and apparently originated in the Neotropics, but has undergone significant radiation in the seasonally dry grasslands and savannas of subtropical and temperate North America, making it an ideal group for ecological and phylogenetic study of the origin of the temperate grassland flora. Before that inference can be attempted, it must be pointed out that a useful classification and an understanding of evolution within the American milkweed vines have been evasive to botanists due to extensive floral variation within the group. To begin to address this problem, we use a combination of sequences from chloroplast markers and multiple cloned nuclear conserved orthologous set (COSII) loci to investigate the evolutionary relationships within the group. Reconstruction of a broadly-sampled (30 spp.) subtribe is presented and implications for classification are covered.

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1 - Oklahoma State University, Botany, 301 Physical Sciences, Stillwater, OK, 74078, USA
2 - Oklahoma State University, 301 Physical Sciences, Stillwater, OK, 74078, United States

Keywords:
Systematics
Matelea
Gonolobus
Milkweed
nuclear markers
Chloroplast markers
phylogeny.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PSY044
Abstract ID:149
Candidate for Awards:None


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