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Penstemon acaulis
Penstemon acaulis, the stemless penstemon, is a rare species in the veronica family from the western US where the states of Wyoming and Utah meet.
In gardens stemless penstemon is somewhat prone to problems with rotting. Its seeds are reluctant to germinate, requiring a cold-moist stratification for 12-weeks followed by as much as 16-weeks of temperature changes to induce sprouting.
Stemless penstemons are a rare species, only known from two counties; Daggett County, Utah and Sweetwater County, Wyoming. There it is found in the Bridger Basin and Browns Park, where it can be found in close proximity to Yampa penstemons at elevations of 1,500 to 2,500 meters (4,900–8,200 ft). Most known occurrences of the species are west of the Flaming Gorge Reservoir, though a few are found east of it. The total extent of its range is approximately 1,000 to 5,000 square kilometers (390–1,930 sq mi).
Firleaf beardtongue · Sharpleaf penstemon · Los Alamos beardtongue · Alberta beardtongue · White penstemon · White River Beardtongue · Whitemargin beardtongue · Gilia beardtongue · Penstemon angelicus · Siskiyou beardtongue · Broadbeard beardtongue · Sand penstemon
Text excerpted from the Wikipedia article Penstemon acaulis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
