Rock Garden Plants
Penstemon strictiformis Rydb. sect. Glabri 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon strictiformis Rydb. sect. Glabri
BibliographyBull. Torrey Bot. Club 31: 642 (1904)
Native RangeColorado to Arizona
Primary BiomeTemperate
Habitatgrassland and thickets
Altitude1700-2400m
Descriptionstems glabrous, basal leaves petiolate, 5-10cm long, oblanceolate, obtuse, glabrous, subglaucous, stem leaves sessile, lanceolate, acuminate, 4-8cm, corolla 2-3cm long
Size15-55cm
Colorpink-purple
Bloomsummer
Ca
Typeperennial
Cultivationmesic, slightly humous, semi-shady site
alpine house, moist, rich, drained soil, semi-shade
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
SynonymsPenstemon strictus ssp. strictiformis (Rydb.) D.D.Keck
Territory7 Northern America
     73 Northwestern U.S.A. (COL Colorado)
     76 Southwestern U.S.A. (ARI Arizona, UTA Utah)
     77 South-Central U.S.A. (NWM New Mexico)
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(c) 1990-2025 RNDr. Pavel Slabý