Rock Garden Plants
Penstemon thompsoniae (A.Gray) Rydb. sect. Caespitosi 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon thompsoniae (A.Gray) Rydb. sect. Caespitosi
BibliographyBull. Torrey Bot. Club. 36: 690 (1909)
Native Rangesw. USA
Primary BiomeTemperate
Habitatrocky slopes
Altitude1500-3400m
Descriptionleaves entire, oblanceolate to spathulate-oblong, 5-12mm, grey-white appressed hirsute, inflorescence racemose, leafy, flowers 13-18mm long, subtubular, staminodium golden barbate
Size5-15cm
Colorbluish violet
Bloomsummer
Ca+
Typesubshrub
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
cuttings in late summer
SynonymsPenstemon caespitosus var. thompsoniae (A.Gray) A.Nelson
Penstemon pumilus var. thompsoniae A.Gray
Penstemon thompsoniae var. desperatus Neese
Penstemon thompsoniae ssp. jaegeri D.D.Keck
Penstemon thompsoniae var. jaegeri (D.D.Keck) Tiehm
Penstemon thompsoniae ssp. typicus D.D.Keck
Territory7 Northern America
     76 Southwestern U.S.A. (ARI Arizona, CAL California, NEV Nevada, UTA Utah)
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(c) 1990-2025 RNDr. Pavel Slabý