Rock Garden Plants
Onosma bourgaei Boiss.  
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FamilyBORAGINACEAE
Genus speciesOnosma bourgaei Boiss. 
BibliographyPl. Orient. Nov. 2: 2 (1875)
Native RangeCaucasus to Turkey
Primary BiomeTemperate
Habitatsteppes
Altitude500-2000m
Descriptionsoftly setose, stem densely leafy, leaves lanceolate, the lower shortly petiolate, the other sessile, acute, flowers in compact raceme, calyx white hirsute, corolla pubescent
Size20-30cm
Colorpale yellow, white
Bloomsummer
Ca+
Typesubshrub
Cultivationsunny site with a deep, drained soil
alpine house, rich, drained soil, sun
Propagationseed in spring, germ. 1-3 months, 13-18°C
cuttings in late summer
SynonymsOnosma circinnata Bourg. ex Boiss.
Territory3 Asia-Temperate
     33 Caucasus (NCS North Caucasus, TCS Transcaucasus)
     34 Western Asia (TUR Turkey)
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