| Family | RANUNCULACEAE |
| Genus species | Clematis grosseserrata (Rydb.) Ackerf. |
| Bibliography | Fl. Colorado: ix (2015) |
| Native Range | sw. Yukon to w. USA and New Mexico |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 700-1900m |
| Description | leaves pinnate, leaflets lobate or entire, crenate-serrate, terminal leaflet sometimes ternate, sepals lanceolate-ovate, 2-6cm long, acute or acuminate |
| Size | 20-40cm |
| Color | red-violet |
| Bloom | spring |
| Ca | |
| Type | climber |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in winter, germ. 3-12 months, 13-18°C half ripe cuttings in early summer |
| Synonyms | Atragene columbiana f. albescens E.H.Kelso Atragene grosseserrata Rydb. Atragene occidentalis var. dissecta (C.L.Hitchc.) Luferov Atragene occidentalis var. grosseserrata (Rydb.) Luferov Clematis columbiana var. dissecta C.L.Hitchc. Clematis occidentalis ssp. dissecta (C.L.Hitchc.) A.Haines Clematis occidentalis var. dissecta (C.L.Hitchc.) J.S.Pringle Clematis occidentalis ssp. grosseserrata (Rydb.) Roy L.Taylor & MacBryde Ranunculus grosseserrata (Rydb.) Ackerf. |
| Territory | 7 Northern America 70 Subarctic America (YUK Yukon) 71 Western Canada (ABT Alberta, BRC British Columbia, SAS Saskatchewan) 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, MNT Montana, ORE Oregon, WAS Washington, WYO Wyoming) 76 Southwestern U.S.A. (UTA Utah) 77 South-Central U.S.A. (NWM New Mexico) |