| Family | VIOLACEAE |
| Genus species | Viola calcicola R.A.McCauley & H.E.Ballard |
| Bibliography | J. Bot. Res. Inst. Texas 7: 13 (2013) |
| Native Range | Texas |
| Primary Biome | Temperate |
| Habitat | shady rocks |
| Altitude | 1500-2100m |
| Description | acaulescent, leaves long petiolate, cordate to deltate, margins obtusely serrate, flowers solitary, pedicellate, sepals ovate to lanceolate, corolla 8-15mm |
| Size | 3-7cm |
| Color | white, purple |
| Bloom | spring |
| Ca | + |
| Type | perennial |
| Cultivation | shady, humous, rock crevices alpine house, humous, gravelly soil, shade |
| Propagation | seed in winter, barely covered, germ. 1-3 months, 13-16°C division after flowering and in fall |
| Territory | 7 Northern America 77 South-Central U.S.A. (TEX Texas) |