| Family | RANUNCULACEAE |
| Genus species | Caltha leptosepala DC. |
| Bibliography | Syst. Nat. 1: 310 (1817) |
| Native Range | c. Alaska to w. USA |
| Primary Biome | Subalpine or Subarctic |
| Habitat | bogs, marshes |
| Altitude | 700-3900m |
| Description | leaves petiolate, oblong-ovate, to 6cm long, basal lobes not overlapping, stem short, with single leaf, floral scape 10-20cm long, petals abaxially bluish |
| Size | 10-40cm |
| Color | white |
| Bloom | spring, summer |
| Ca | |
| Type | perennial |
| Cultivation | very moist to boggy, semi-shady site alpine house, moist, humous, sandy soil, semi-shade |
| Propagation | seed in winter, uncovered, moist, germ. 3-12 months, 10-16°C division after flowering and in fall |
| Synonyms | Caltha auriculata (Raf.) Merr. Caltha biflora var. rotundifolia (Huth) C.L.Hitchc. Caltha chelidonii Greene Caltha lasiopetala Steud. Caltha leptosepala var. macounii (Greene) K.C.Davis Caltha leptosepala var. rotundifolia Huth Caltha leptosepala var. sulfurea C.L.Hitchc. Caltha leptostachya G.Don Caltha macounii Greene Caltha malvacea Greene Caltha rotundifolia (Huth) Greene Caltha uniflora Rydb. Psychrophila auriculata (Raf.) Merr. Psychrophila leptosepala (DC.) W.A.Weber |
| Territory | 7 Northern America 70 Subarctic America (ASK Alaska, YUK Yukon) 71 Western Canada (ABT Alberta, BRC British Columbia) 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, ORE Oregon, WAS Washington) 76 Southwestern U.S.A. (ARI Arizona, CAL California) |