Rock Garden Plants
Penstemon virens Pennell ex Rydb. sect. Penstemon 
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FamilyPLANTAGINACEAE
Genus speciesPenstemon virens Pennell ex Rydb. sect. Penstemon
Habitatgrassland and thickets
Altitude1600-2600m
Descriptionleaves entire or denticulate, bright shiny green, glabrous, oblanceolate to elliptic, 3-10cm long, inflorescence dense, verticillate, flowers 10-15mm long
Size10-40cm
Colorbluish violet, blue
Bloomsummer
Ca-
Typesubshrub
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
cuttings in late summer
Territory Northern America
     Northwestern U.S.A. (Colorado , Wyoming)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Picture Picture Picture
Comments

PLANTAGINACEAE

Penstemon virens Pennell ex Rydb., Fl. Rocky Mts. 77, 1066 (1917)

Colorado, Wyoming
73 COL WYO

1600-2600m

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(c) 1990-2021 RNDr. Pavel Slabý