Rock Garden Plants
Mentzelia  argillosa J.Darl.   
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FamilyLOASACEAE
Genus species var.Mentzelia  argillosa J.Darl. 
SynonymsNuttallia argillosa (J.Darl.) W.A.Weber
Territory Northwestern U.S.A.Southwestern U.S.A.ColoradoUtah
rocky slopes
Altitude1700-2700m
Description leaves grey-green, sessile, entire, oblong-spathulate, hirsute, flowers solitary, petals obovate
Size20-30cm
Coloryellow
Bloomsummer
Ca
Typetuft
Cultivationrock crevices with favourable water regime, eastern slopes
alpine house, poor, drained soil, shading in summer
Propagationseed in spring, barely covered, germ. 1-3 months, 13-18°C
cuttings in late spring and in summer
BibliographyCronquist, A. et al. (1972-2005) Intermountain Flora
USDA Plants Database plants.usda.gov
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý