| Family | POLYGONACEAE |
| Genus species | Eriogonum effusum Nutt. sect. Eucycla |
| Bibliography | Proc. Acad. Nat. Sci. Philadelphia 4(Mar.-Apr.): 15 (1848) |
| Native Range | nw. & c. USA |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 1200-2500m |
| Description | leaves oblanceolate to oblong, 1-3cm, abaxially densely white tomentose, adaxially green, floccose to glabrous, inflorescence cymose, diffuse, involucre solitary, turbinate |
| Size | 15-50cm |
| Color | yellow |
| Bloom | summer |
| Ca | + |
| Type | subshrub |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C cuttings in late summer |
| Synonyms | Eriogonum effusum var. contortum S.Stokes Eriogonum effusum ssp. typicum S.Stokes Eriogonum microtheca var. effusum (Nutt.) Torr. & A.Gray Eriogonum microtheca ssp. myrianthum Gand. Eriogonum myrianthum Gand. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, MNT Montana, WYO Wyoming) 74 North-Central U.S.A. (NEB Nebraska, SDA South Dakota) 77 South-Central U.S.A. (NWM New Mexico) |