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Abstract Detail


Systematics Section

Bresowar , Gerald Edward [1], McGlaughlin, Mitchell E [2].

Phylogenetics of the genus Cryptantha subgenus Oreocarya (Boraginaceae): A western North American endemic taxon.

The Colorado Plateau/Great Basin flora contains a large number of taxa with rare and/or endemic species. The genus Cryptantha subgenus Oreocarya (Boraginaceae) is one such taxon. The Colorado Plateau of the Western U.S. is the center of diversity for the subgenus. Geographic distributions and occurrence patterns within the subgenus vary from widespread and common, to narrowly endemic and rare. A phylogenetic study of the genus Cryptantha subgenus Oreocarya (Boraginaceae) is being conducted using the nDNA region ITS and the cpDNA regions trnL-T, trnT-F, and trnQ-rps16. The data indicate non-congruence between the cpDNA and nDNA phylogenies, with ITS data suggesting polyploidy in multiple species. Statistical support for topological structure is significant, though resolution is low. Tree topologies suggest a recent species radiation. This study is relevant to the understanding of evolutionary relatedness in a warm-desert plant taxon.

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1 - University of Northern Colorado, Biology, 501 20th St., Greeley, CO, 80639, United States
2 - University of Northern Colorado, Biology, 501 20th St, Greeley, CO, 80639, USA

Keywords:
Oreocarya
Cryptantha
Colorado Plateau
Boraginaceae.

Presentation Type: Oral Paper:Papers for Sections
Session: 27
Location: Lindell A/Chase Park Plaza
Date: Tuesday, July 12th, 2011
Time: 9:00 AM
Number: 27003
Abstract ID:296


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