| Family | APIACEAE |
| Genus species | Cymopterus albiflorus Torr. & A.Gray |
| Bibliography | Fl. N. Amer. 1: 625 (1840) |
| Native Range | w. USA |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 150-3500m |
| Description | leaves bi- or triternate, ultimate segments linear, crowded, bracts linear, achenes suborbiculate, 4mm long, wings sinuate |
| Size | 10-20cm |
| Color | white |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed when ripe or in early spring |
| Synonyms | Cymopterus calcareus M.E.Jones Cymopterus californicus (J.M.Coult. & Rose) M.E.Jones Cymopterus terebinthus var. albiflorus (Torr. & A.Gray) M.E.Jones Cymopterus terebinthinus var. calcareus (M.E.Jones) Cronquist Cymopterus terebinthinus var. californicus (J.M.Coult. & Rose) Jeps. Pteryxia albiflora (Torr. & A.Gray) Nutt. Pteryxia calcarea (M.E.Jones) J.M.Coult. & Rose Pteryxia californica J.M.Coult. & Rose Pteryxia terebinthina var. albiflora (Torr. & A.Gray) Mathias Pteryxia terebinthina var. calcarea (M.E.Jones) Mathias Pteryxia terebinthina var. californica (J.M.Coult. & Rose) Mathias |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, ORE Oregon, WYO Wyoming) 76 Southwestern U.S.A. (CAL California, NEV Nevada, UTA Utah) |