Rock Garden Plants
Penstemon  oliganthus Wooton & Standl.   
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FamilyPLANTAGINACEAE
Genus species var.Penstemon  oliganthus Wooton & Standl. 
Territory Southwestern U.S.A.South-Central U.S.A.ArizonaNew Mexico
grassland
Altitudemontane
Description stems thin, basally glabrous, apically glandular, basal leaves oblong, 2cm long, stem leaves linear-lanceolate, calyx glandular-hirsute, flowers 20-25mm, in throat barbate
Size20-30cm
Colorbluish white
Bloomsummer
Ca
Typetuft
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
division in spring; cuttings in late summer
BibliographyKearney, T.H. et al. (1951-1960) Arizona Flora
USDA Plants Database plants.usda.gov
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý