Eriogonum umbellatum var. haussknechtii

Plants herbs, typically prostrate, sprawling mats, 0.5–1.5 dm tall, 1–4 dm across; aerial flowering stems spreading to erect, 0.3–0.6 (1.5) dm long, thinly tomentose, without one or more foliaceous bracts about midlength; leaves typically in tight rosettes, the blades usually broadly elliptic, 0.5–1.5 (2.5) cm long, 0.5–1.2 (1.5) cm wide, tannish-tomentose abaxially, thinly tomentose or glabrous and olive green adaxially, the margins plane; inflorescences compact-umbellate, the branches 0.1–1.5 (2) cm long, thinly tomentose, without a whorl of bracts about midlength; involucral tubes 1.5–3.5 mm long, the lobes 1–4 mm long; flowers 2–6 mm long, the perianth bright yellow.

Flowering Jun-Sep. Volcanic, sandy to gravelly slopes and ridges, mixed grassland and sagebrush communities, montane to subalpine conifer woodlands; 1000–2500 (3100) m; north-central Oregon (Benton, Clackamas, Hood River, and Wasco cos.) and south-central Washington (Kittitas and Yakima cos.).