Eriogonum thomasii

Plants herbs, spreading, annual, 0.5–3 dm tall, glabrous, greenish, sometimes grayish or reddish; stems with caudex absent, the aerial flowering stems erect, solid, not fistulose, 0.2–1 dm long, glabrous except for few glands proximally; leaves basal, the petioles 0.5–3 cm long, the blades round to round-reniform, cm long, 0.5– 2 cm long and wide, densely white-tomentose abaxially, floccose to glabrate and greenish adaxially, the margins plane; inflorescences cymose, open to diffuse, 5–25 cm long and wide, the branches glabrous, the bracts 3, scalelike, 1–2.5 mm long, 1–2 mm wide; peduncles capillary, spreading to slightly recurved, straight or curved, capillary, 0.5–3 cm long, glabrous; involucres turbinate-campanulate, 0.6–1.2 mm long, 0.7–1.3 mm wide, glabrous, the teeth 5, erect, 0.4–0.6 mm long; flowers 0.8–1 mm long in early anthesis, becoming 1.2–2 mm long, the perianth yellow in early anthesis, becoming white to rose, short-hispidulous, the tepals dimorphic, those of outer whorl cordate, becoming saccate-dilated proximally, those of inner whorl spatulate, the stamens included, 0.5–0.9 mm long, the filaments mostly glabrous; achenes brown to dark brown, usually lenticular, 0.8–1 mm long, glabrous. 2n = 40.


Flowering year-round. Sandy flats, washes, and slopes, saltbush, greasewood, creosote bush, and sagebrush communities, pinyon and/or juniper woodlands; -70–1200 (1400) m.