Flora of North America species comparison

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Penstemon subg. Dasanthera
Flowers

pollen sacs usually explanate, dehiscing completely, connective splitting, sides usually densely lanate, (subexplanate, sides glabrous in P. personatus), sutures smooth;

staminode included, length usually 1/3–3/4 times corolla throat.
Seeds

angled, wings absent or narrow.

Penstemon subg. Dasanthera
Distribution
w North America
Discussion

Species 10 (10 in the flora).

Subgenus Dasanthera appears to be the basal lineage in the clade corresponding to Penstemon (A. D. Wolfe et al. 2006). As circumscribed here, subg. Dasanthera comprises a single section, sect. Erianthera. Morphologic and molecular data indicate that the persistent-leaved lineage of the Sierra-Cascade is derived from the mostly deciduous-leaved lineage of the Rocky Mountains (A. D. Every 1977; S. L. Datwyler and Wolfe 2004).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 85.
Parent taxa Plantaginaceae > Penstemon
Subordinate taxa
Synonyms Dasanthera
Name authority (Rafinesque) Pennell: Contr. U.S. Natl. Herb. 20: 327. (1920)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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