| Family | APIACEAE |
| Genus species | Cymopterus sessiliflorus (W.L.Theob. & C.C.Tseng) R.L.Hartm. |
| Bibliography | Sida 22: 956 (2006) |
| Native Range | sw. Colorado to New Mexico |
| Primary Biome | Subtropical |
| Habitat | rocks |
| Altitude | 1500-2100m |
| Description | leaves in outline oblong, 2-6cm. pinnate, ultimate segments linear, 3-25mm, glabrous, peduncles glabrous, rays 4-8, spreading, unequal, bracts linear |
| Size | 6-13cm |
| Color | yellow-white |
| Bloom | early summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed when ripe or as soon as possible |
| Synonyms | Aletes macdougalii ssp. breviradiatus W.L.Theob. & C.C.Tseng Aletes sessiliflorus W.L.Theob. & C.C.Tseng Cymopterus breviradiatus (W.L.Theob. & C.C.Tseng) R.L.Hartm. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado) 76 Southwestern U.S.A. (ARI Arizona, UTA Utah) 77 South-Central U.S.A. (NWM New Mexico) |