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Fabre, Paige [1], Wolfe, Andi [2], Stone, Benjamin [2].

Patterns of Staminode Evolution in Penstemon (Plantaginaceae).

Penstemon is a genus of ca. 300 species and 400 taxa, making it the largest genus of flowering plants endemic to North America. With its rapid diversification in the Pleistocene, this genus has developed tremendous variation in both vegetative and floral morphology over short evolutionary time. Particularly, staminode morphology varies dramatically throughout the genus and even within pollination syndromes. This level of staminode diversity is not seen in other plant genera, making Penstemon an ideal study system for examining staminode morphology and function in a phylogenetic context. Using an updated phylogeny, we investigate staminode evolution in Penstemon subgenus Penstemon section Cristati, a small clade of ~30 taxa that are primarily distributed throughout the Western Cordillera and Intermountain Region of the United States.

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1 - Ohio State University, EEOB, 318 W. 12th Avenue, 318 Aronoff Laboratory, Columbus, OH, 43221, United States
2 - The Ohio State University, Evolution, Ecology & Organismal Biology, 300 Aronoff Laboratory, 318 W. 12th Avenue, Columbus, OH, 43210, United States

floral trait evolution.

Presentation Type: Oral Paper
Session: SYSTV, Systematics V: Euasterids cont.
Location: Virtual/Virtual
Date: Thursday, July 22nd, 2021
Time: 12:45 PM(EDT)
Number: SYSTV002
Abstract ID:741
Candidate for Awards:None

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