| Family | PLANTAGINACEAE |
| Genus species | Penstemon serrulatus Menzies sect. Saccanthera |
| Synonyms | Penstemon argutus Paxton |
| Penstemon diffusus Douglas | |
| Habitat | alluvial gravel |
| Altitude | 0-1800m |
| Description | stem leaves opposite, glabrous, petiolate or sessile, ovate or lanceolate, the upper amplexicaule, serrate, acute, thyrsus cylindrical, corolla slightly ventricose, 17-25mm |
| Size | 13-80cm |
| Color | blue, violet, purple |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | gravelly, humous, moist, sunny site alpine house, moist, humous, gravelly soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late summer |
| Territory |
Northern America
Subarctic America (Alaska ) Western Canada (British Columbia ) Northwestern U.S.A. (Oregon , Washington) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | PLANTAGINACEAE
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