Rock Garden Plants
Penstemon acaulis L.O.Williams sect. Cristati 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon acaulis L.O.Williams sect. Cristati
BibliographyAnn. Missouri Bot. Gard. 21: 345 (1934)
Native RangeWyoming to Utah
Primary BiomeTemperate
Habitatrocky slopes
Altitude1500-2500m
Descriptionleaves all basal, sublinear, to 22mm long, crowded, flowers subsessile, solitary, tubular-campanulate, staminodium with short, yellow hairs
Size5-10cm
Colorbright blue
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
Territory7 Northern America
     73 Northwestern U.S.A. (WYO Wyoming)
     76 Southwestern U.S.A. (UTA Utah)
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(c) 1990-2025 RNDr. Pavel Slabý