| Family | BRASSICACEAE |
| Genus species | Boechera lyallii (S.Watson) Dorn |
| Bibliography | Vasc. Pl. Wyoming, ed. 3: 376 (2001) |
| Native Range | Yukon to w. USA |
| Primary Biome | Subalpine |
| Habitat | rocky slopes |
| Altitude | 1400-3900m |
| Description | basal leaves numerous, bright green, carnose, 15-30mm long, elliptic-oblanceolate, acute, stem leaves oblong, flowers in raceme, petals 6-10mm long, siliques glabrous, 2-6cm |
| Size | 5-20cm |
| Color | purplish, lavender |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer |
| Propagation | seed in spring, barely covered, germ. 1 month, 10-16°C division in fall; cuttings in late summer |
| Synonyms | Arabis armeriifolia Greene Arabis densa Greene Arabis drummondii var. alpina S.Watson Arabis drummondii var. lyallii (S.Watson) Jeps. Arabis lyallii S.Watson Arabis lyallii var. typica Rollins Arabis multiceps Greene Arabis murrayi G.A.Mulligan |
| Territory | 7 Northern America 70 Subarctic America (YUK Yukon) 71 Western Canada (BRC British Columbia) 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, ORE Oregon, WAS Washington) 76 Southwestern U.S.A. (CAL California, NEV Nevada, UTA Utah) |