Rock Garden Plants
Penstemon radicosus A.Nelson sect. Penstemon 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon radicosus A.Nelson sect. Penstemon
BibliographyBull. Torrey Bot. Club 25: 280 (1898)
Native Rangew. USA
Primary BiomeTemperate
Habitatrocky slopes
Altitude1500-2400m
Descriptionfinely pubescent, in inflorescence glandular, leaves only on stem, sessile, lanceolate-linear, 2-6cm long, inflorescence lax, verticillate, flowers 16-23mm long
Size15-40cm
Colorbluish purple
Bloomsummer
Ca
Typeperennial
Cultivationsunny rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
SynonymsPenstemon lineolatus Greene
Territory7 Northern America
     73 Northwestern U.S.A. (COL Colorado, IDA Idaho, MNT Montana, WYO Wyoming)
     76 Southwestern U.S.A. (NEV Nevada, UTA Utah)
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(c) 1990-2025 RNDr. Pavel Slabý