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Abstract Detail


Systematics Section / ASPT

Drew, Bryan T. [1], Delventhal, Naomi [2], Sytsma, Kenneth J. [3].

Phylogeny and Biogeography of Lepechinia (Lamiaceae-Nepetoideae).

Lepechinia is a genus comprising approximately 42 species, from perennial herbs to treelets, with a native range from the Sierra Nevada foothills of Northern California to central Argentina. Species of dubious origins also occur in Hawaii and Reunion Island. Due to a high morphological diversity and a putative ancient divergence, no synapomorphies for the genus have been found other than a potentially distinctive odor. Previous morphological work by Carl Epling (1935-1968) and Jeffrey Hart (1983) left unanswered questions regarding the monophyly of Lepechinia and the intrageneric relationships within the group. This study will address these questions using a molecular approach with sequence data from nuclear (ITS) and plastid (rps16, trnl-f, ycf1) markers. On a broader scale, the possibility that Lepechinia is sister to the large Salvia clade in the Mentheae tribe has been suggested by Walker et al (2004). In the future, this and other phylogenetic and biogeographic issues will be explored. Finally, the origin of the Hawaiian species L. hastata will be addressed using a combination of the aforementioned gene regions and AFLP markers.


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1 - University of Wisconsin-Madison, Botany, 430 Lincoln Drive, Madison, WI, 53706-1381, USA
2 - University of Manitoba, Department of Zoology, Winnipeg, Manitoba, MB R3T 2N2, Canada
3 - University of Wisconsin Madison, Department of Botany, Birge Hall, 430 Lincoln Drive, Madison, Wisconsin, 53706-1381, USA

Keywords:
Lepechinia
Lamiaceae
phylogeny.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P59050
Abstract ID:2237


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