Systematics/Phytogeography / Taxonomie/ Section
Huang, Daisie , Friar, Elizabeth .
Phylogenetics of the Lupinus albifrons-Lupinus excubitus species complex.
The taxonomy of the species complex comprised of Lupinus excubitus, Lupinus albifrons, and Lupinus longifolius has been disputed for many years and is still unsettled. Part of the confusion arises from the many morphological forms that are found where the three taxa meet in the Transverse Ranges of California. While the subspecies of L. albifrons and L. excubitus display fairly consistent morphologies through the majority of their ranges, in the Transverse Ranges, several forms occur in fairly small geographic areas and are distinct from the forms found in nearby regions. Compounding the problem, all three taxa display phenotypic plasticity in many commonly observed morphological characters. My research indicates that molecular data may be helpful in understanding the evolution of the many subspecies found in the Transverse Ranges, and that the L. albifrons species complex may hold the key to understanding the evolution of perennial lupines in the California Floristic Province.
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1 - Rancho Santa Ana Botanic Garden, Botany, 1500 N. College Ave., Claremont, CA, 91711-3157, USA
2 - Rancho Santa Ana Botanic Garden, 1500 North College Avenue, Claremont, California, 91711, USA
Presentation Type: Oral Paper:Papers for Sections
Date: Tuesday, July 29th, 2008
Time: 11:00 AM