Eriogonum umbellatum var. umbellatum
Herbs, spreading mats, 1–3.5 × 2–6 dm. Aerial flowering stems erect, 1–2.5(–3) dm, tomentose to floccose, without one or more leaflike bracts ca. midlength. Leaves in loose rosettes; blade usually elliptic to ovate, 1–2.5(–3) × 0.5–1.5(–1.8) cm, white- to gray-lanate abaxially, less so to floccose or glabrous and green adaxially, margins plane. Inflorescences umbellate; branches 0.3–2.5(–8) cm, without a whorl of bracts about midlength; involucral tubes 2–3 mm, lobes 1.5–3 mm. Flowers 4–7(–8) mm; perianth bright yellow. 2n = 80.
Phenology: Flowering Jun–Sep.
Habitat: Sandy to gravelly flats and slopes, mixed grassland and sagebrush communities, scrub oak and montane conifer woodlands
Elevation: (1000-)1200-2700(-3100) m
Colo., Idaho, Mont., Utah, Wyo.
Variety umbellatum is widespread and rather common. Overlying a portion of the range of var. umbellatum is the glabrous-leaved var. aureum, but the latter occurs over a greater area and mainly much farther to the west. Still, clear distinction between the two is not always possible. Variety umbellatum is found in cultivation, especially in European gardens.