Systematics/Phytogeography / Taxonomie/ Section
Manos, Paul S. , Cannon, Charles H. , Oh, Sang-Hun .
Phylogenetic relationships and taxonomic status of the paleoendemic Fagaceae of western North America: recognition of a new genus Notholithocarpus.
We investigated the phylogenetic relationships and taxonomic status of the castaneoid component (Lithocarpus and Chrysolepis) of the family Fagaceae that is endemic to the California Floristic Province (CA-FP). Over 7,800 basepairs of nuclear and chloroplast DNA were analyzed in 17 taxa representing the breadth of phylogenetic diversity in the family. The genus Lithocarpus in the traditional sense was not supported as monophyletic, and a new genus Notholithocarpus is recognized based on its phylogenetic position and uniquely small, subprolate pollen grains. Notholithocarpus is more closely related to Quercus, Castanea and Castanopsis whereas Chrysolepis was resolved as the sister group to Lithocarpus s. s. Cupule evolution is reconsidered in light of these results.
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1 - Duke University, Department of Biology, 137 Biological Sciences, Durham, NC, 27708, USA
2 - Texas Tech University, Department of Biological Sciences, Po Box 43131, Lubbock, Texas, 79409-3131, USA
3 - Cornell University, L. H. Bailey Hortorium, Department of Plant Biology, 412 Mann Library, Ithaca, New York, 14853, USA
California Floristic Province
Presentation Type: Oral Paper:Papers for Sections
Date: Wednesday, July 30th, 2008
Time: 4:00 PM