Weitemier, Kevin .
Phylogenetic relationships among varieties of the widespread western North American perennial, Lupinus lepidus (Fabaceae).
The perennial lupine, Lupinus lepidus, is a complex of entities currently classified as ten varieties of the western United States. Previous classifications have recognized as many as ten species containing additional varieties. The currently recognized varieties are separated by a suite of morphological characteristics and while typical representatives of each variety can be clearly distinguished, intermediate forms are common. Phylogenetic analyses of DNA sequence data have not been conducted and previous studies utilizing allozyme data were inconclusive. In this study relationships are evaluated among varieties, with intensive study focused on Lupinus lepidus var. lobbii, which is present along the length of the Cascade Range. Chloroplast and nuclear sequence data are utilized along with microsatellite data. These data are analyzed using traditional phylogenetic and population genetics techniques and, because this is likely a recent and rapid diversification, with phylogenetic techniques incorporating a coalescent model. Although the monophyly of these varieties has not been satisfactorily evaluated, results do not support reciprocal monophyly.
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1 - Portland State University, Biology, PO Box 751, Portland, OR, 97207, USA
Presentation Type: Oral Paper:Papers for BSA Sections
Location: Maybird/Cliff Lodge - Level C
Date: Monday, July 27th, 2009
Time: 9:45 AM