| Family | RUBIACEAE |
| Genus species | Houstonia longifolia Gaertn. |
| Synonyms | Hedyotis longifolia (Gaertn.) Hook. |
| Habitat | 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 |
| Size | 15-25cm |
| Color | purple, whitish |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | sunny site with a deep, drained soil alpine house, rich, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 10-16°C cuttings in late summer |
| Territory |
Northern America
Western Canada (Alberta , Manitoba , Saskatchewan ) Eastern Canada (Ontario ) North-Central U.S.A. (Illinois , Missouri , Oklahoma ) Northeastern U.S.A. (Indiana , New York ) South-Central U.S.A. (Texas ) Southeastern U.S.A. (Alabama , Arkansas , Georgia , Mississippi) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | RUBIACEAE
longifolia tenuifolia (Nutt.) Alph.Wood, Class-book Bot., (ed. 1861). 403 (1861)
|