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Abstract Detail


Systematics Section

Wenzel, Aaron [1], Wolfe, Andrea [1], English, Carol [2], Bruederle, Leo [3].

Reproductive biology and genetic diversity in Penstemon degeneri (Plantaginaceae), a rare species endemic to Colorado.

Penstemon degeneri Crosswhite (Plantaginaceae), otherwise known as Degener's Beardtongue, is a rare Colorado endemic that is reported to be restricted in distribution to Custer and Fremont Counties, and has a reported chromosome number of n = 8. It is considered imperiled at the state level(S2), as well as globally (G2). Fieldwork addressing the reproductive biology of this species revealed that P.degeneri sets fruit involving outcrossing effected by a variety of insect visitors coupled with a small amount of self-pollination in the absence of pollinators. Effective pollinators determined from visitor frequency,behavior, body pollen, and fidelity revealed that effective pollinators included Osmia and Bombus bees, as well as Pseudomasaris vespoides, an oligolectic pollen wasp. A population genetics study was conducted using eight microsatellite loci revealing allelic variation among populations and a genetic profile consistent with polyploidy rather than diploidy.

Broader Impacts:


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1 - Ohio State University, Department of Evolution, Ecology, and Organismal Biology, 318 W. 12th Avenue, Columbus, OH, 43210-1293, USA
2 - University Of Colorado Denver, PO Box 281, Morrison, CO, 80465, USA
3 - University Of Colorado Denver, CB171, P.O. 173364, DENVER, CO, 80217-3364, USA

Keywords:
Plantaginaceae
Penstemon
Reproductive biology
Genetic diversity
conservation genetics
rare plant.

Presentation Type: Oral Paper:Papers for Sections
Session: 36
Location: Lindell B/Chase Park Plaza
Date: Tuesday, July 12th, 2011
Time: 4:45 PM
Number: 36014
Abstract ID:132


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