| Family | PLANTAGINACEAE |
| Genus species | Penstemon rydbergii A.Nelson sect. Penstemon |
| Synonyms | Penstemon erosus Rydb. |
| Penstemon lacerellus Greene | |
| Penstemon productus Greene | |
| Habitat | grassland |
| Altitude | 600-3300m |
| Description | glabrous, leaves entire, basal leaves petiolate, oblanceolate or narrowly elliptic, in rosette, inflorescence verticillate, flowers horizontal, 11-15mm long |
| Size | 20-70cm |
| Color | bluish purple |
| Bloom | summer |
| Ca | |
| Type | tuft |
| Cultivation | mesic, slightly humous, sunny site alpine house, moist, rich, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late summer |
| Territory |
Northern America
Northwestern U.S.A. (Colorado , Wyoming ) Southwestern U.S.A. (Utah ) South-Central U.S.A. (New Mexico) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | PLANTAGINACEAE
rydbergii aggregatus (Pennell) D.D.Keck, ibid.
rydbergii oreocharis (Greene) N.H.Holmgren, Intermount. Fl. [A.Cronquist & al.] 4: 390 (1984)
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