| Family | MONTIACEAE |
| Genus species | Calyptridium monospermum Greene |
| Synonyms | Spraguea caespitosa Rydb. |
| Spraguea eximia Eastw. | |
| Spraguea monosperma (Greene) Rydb. | |
| Habitat | dry, rocky slopes |
| Altitude | 300-3500m |
| Description | basal leaves spathulate, 1-15cm long, stem leaves smaller, inflorescence umbellate cyme, flowers subsessile, sepals orbiculate, 3-8mm, petals 4, 3-9mm long |
| Size | 10-40cm |
| Color | white, rose |
| Bloom | spring, summer |
| Ca | |
| Type | rosette, stem ascending |
| Cultivation | sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months 18-21°C cuttings of rosettes in summer |
| Territory |
Northern America
Northwestern U.S.A. (Oregon ) Southwestern U.S.A. (California , Nevada ) Mexico (Mexico Northwest) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | MONTIACEAE
|