| Family | PLANTAGINACEAE |
| Genus species | Penstemon aggregatus Pennell sect. Penstemon |
| Bibliography | Contr. U.S. Natl. Herb. 20: 367 (1920) |
| Native Range | wc. USA |
| Primary Biome | Temperate |
| Habitat | sandy grassland |
| Altitude | 1800-3200m |
| Description | basal leaves glabrous, lanceolate, acute, entire, tapered to petiolate base, stem leaves lanceolate, thyrsus narrow, cylindrical, sepals lanceolate, acuminate, corolla 2cm |
| Size | 30-80cm |
| Color | pale blue-violet |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny site with a poor, sandy soil alpine house, sandy soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C division in spring; cuttings in late summer |
| Synonyms | Penstemon rydbergii var. aggregatus (Pennell) N.H.Holmgren Penstemon rydbergii ssp. aggregatus (Pennell) D.D.Keck |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, MNT Montana, WYO Wyoming) 76 Southwestern U.S.A. (ARI Arizona, UTA Utah) |