| Family | OXALIDACEAE |
| Genus species | Oxalis trilliifolia Hook. |
| Bibliography | Fl. Bor.-Amer. 1: 118 (1831) |
| Native Range | nw. USA to California |
| Primary Biome | Temperate |
| Habitat | grassland |
| Altitude | 20-1800m |
| Description | acaulescent, leaves brown petiolate, ternate, leaflets obcordate, glabrous, flowers 8-15 in umbel |
| Size | 15-20cm |
| Color | pink, white |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, sunny site alpine house, moist, rich, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months 18-21°C division in early spring and fall; cuttings in late summer |
| Synonyms | Acetosella trilliifolia (Hook.) Kuntze Hesperoxalis trilliifolia (Hook.) Small Oxalis microphylla Douglas ex Hook. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, ORE Oregon, WAS Washington) 76 Southwestern U.S.A. (CAL California) |