Rock Garden Plants
Asperula  rigida Sibth. & Sm.   
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FamilyRUBIACEAE
Genus species var.Asperula  rigida Sibth. & Sm. 
SynonymsAsperula kritsensis Coustur. & Gand.
 Asperula platygona Gand.
 Crucianella rigida (Sibth. & Sm.) Tausch
Territory Southeastern EuropeWestern AsiaEast Aegean Is.Kriti
dry, rocky slopes
Description branchlets sparsely hirsute, rigid, ascendent, leaves in whorls of 6, oblong-elliptic to linear, inflorescence lax, flowers sessile, 2-4mm long, glabrous
Size7-25cm
Colorred, yellow
Bloomsummer
Ca
Typesubshrub
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
cuttings in late summer
BibliographyTutin T.G.(ed.) Flora Europaea (1964-1980)
World Checklist apps.kew.org/wcsp
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý