Rock Garden Plants
Penstemon douglasii Hook. sect. Erianthera 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon douglasii Hook. sect. Erianthera
BibliographyFl- Bor.-Amer. 2: 98 (1838)
Native Rangew. Canada to Oregon
Primary BiomeTemperate
Habitatrocks and scree
Altitude30-2000m
Descriptionbranchlets erect, leaves glabrous, obovate-lanceolate, acute, coriaceous, entire, sessile, flowers in terminal raceme, sepals ovate-lanceolate, sparsely serrate
Size8-15cm
Colorviolet
Bloomsummer
Ca
Typesubshrub
Cultivationgravelly, humous, moist, sunny site
alpine house, moist, humous, gravelly soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
cuttings in late summer
SynonymsPenstemon davidsonii var. menziesii (D.D.Keck) Cronquist
Penstemon davidsonii ssp. menziesii D.D.Keck
Penstemon fruticosus var. douglasii (Hook.) C.K.Schneid.
Penstemon menziesii var. douglasii (Hook.) A.Gray
Penstemon menziesii f. douglasii (Hook.) Voss
Territory7 Northern America
     71 Western Canada (BRC British Columbia)
     73 Northwestern U.S.A. (ORE Oregon, WAS Washington)
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(c) 1990-2025 RNDr. Pavel Slabý