| Family | PLANTAGINACEAE |
| Genus species | Penstemon arkansanus Pennell sect. Penstemon |
| Bibliography | Proc. Acad. Nat. Sci. Philadelphia 73: 493 (1922) |
| Native Range | Missouri to Oklahoma |
| Primary Biome | Temperate |
| Habitat | grassland and thickets |
| Altitude | 60-300m |
| Description | stems adpressed hirsute, stem leaves 8-12-pairs, sessile, lanceolate, serrate or dentate, acute to acuminate, thyrsus interrupted, whorls 4-8, corolla tubular |
| Size | 20-45cm |
| Color | white |
| Bloom | spring, early summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, semi-shady site alpine house, moist, rich, drained soil, semi-shade |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C division in spring; cuttings in late summer |
| Synonyms | Penstemon multicaulis Pennell Penstemon pallidus ssp. arkansanus (Pennell) R.W.Benn. Penstemon wherryi Pennell |
| Territory | 7 Northern America 74 North-Central U.S.A. (MSO Missouri, OKL Oklahoma) 78 Southeastern U.S.A. (ARK Arkansas) |