| Family | APIACEAE |
| Genus species | Cymopterus petraeus M.E.Jones |
| Bibliography | Contr. W. Bot. 8: 32 (1898) |
| Native Range | w. USA to New Mexico |
| Primary Biome | Subalpine |
| Habitat | rocky slopes |
| Altitude | 1000-4000m |
| Description | leaves light green, in outline narrowly oblong, 3-15cm, tripinnatipartite, ultimate segments linear, 1-8mm, petioles 5-12mm long, rays of umbels 3-7, to 5cm long |
| Size | 15-20cm |
| Color | yellow |
| Bloom | spring |
| Ca | |
| Type | perennial |
| Cultivation | rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer |
| Propagation | seed when ripe or in early spring |
| Synonyms | Aletes petraea (M.E.Jones) W.A.Weber Cymopterus terebinthus var. petraeus (M.E.Jones) Goodrich Pteryxia petraea (M.E.Jones) J.M.Coult. & Rose |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, ORE Oregon) 76 Southwestern U.S.A. (ARI Arizona, CAL California) 77 South-Central U.S.A. (NWM New Mexico) |