Rock Garden Plants
Houstonia  longifolia Gaertn.   
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FamilyRUBIACEAE
Genus species var.Houstonia  longifolia Gaertn. 
SynonymsHedyotis longifolia (Gaertn.) Hook.
 Hedyotis purpurea var. longifolia (Gaertn.) Fosberg
 Houstonia purpurea var. longifolia (Gaertn.) A.Gray
Territory
american prairie
Description stems numerous, leaves opposite, sessile, linear-oblong, 1-3cm long, at base with small, whitish or purple bracts, flowers numerous in cyme, corolla tetramerous
Size15-25cm
Colorpurple, whitish
Bloomsummer
Ca
Typesubshrub
Cultivationsunny site with a deep, drained soil
alpine house, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
cuttings in late summer
BibliographySmall, J.K. (1933) Manual of the Southeastern Flora
World Checklist apps.kew.org/wcsp
Version 8.0
(c) 1990-2016 RNDr. Pavel Slabý