Plants herbs, erect or spreading, annual, 1–5 dm tall, villous, greenish, yellowish-green, or reddish; stems with caudex absent, the aerial flowering stems erect or nearly so, solid, not fistulose, 0.1–0.8 dm long, villous; leaves basal and cauline; basal: petiole 0.1–0.5 (1) cm long, blade linear-lanceolate to linear-oblanceolate, 1–4 cm long, 0.1–0.4 cm wide, white-lanate abaxially, villous and greenish to yellowish-green adaxially, the margins plane or revolute; cauline: sessile, blade linear, 0.5–2.5 cm long, 0.05–0.3 cm wide, tomentose abaxially, thinly villous or glabrous and greenish adaxially; inflorescences cymose, open, 5–45 cm long, 3–40 cm wide, the branches villous, the bracts 3–8, semi-foliaceous, 5–15 mm long, 0.3–1.5 (2) mm wide; peduncles erect or nearly so, straight, slender, (1) 2–5 (7) cm long, sparsely villous or glabrous; involucres campanulate, 1–2 mm long, 2–3 mm wide, villous, the teeth 5, mostly erect to spreading, 1–3 mm long; flowers 1–3 mm long, the perianth white to rose or yellow, sometimes becoming reddish, glabrous, the tepals dimorphic, those of outer whorl oblong-ovate, 2–saccate-dilated proximally, those of inner whorl linear- oblong, the stamens mostly included, 1–1.5 mm long, the filaments mostly pilose proximally; achenes brown to blackish, lenticular, 1.8–2 mm long, glabrous.
Eriogonum pharnaceoides var. pharnaceoides: perianth white to rose; n and e Arizona, w New Mexico and Chihuahua, Mexico. var. pharnaceoides.
Plants 1–5 dm tall; basal leaves with petioles usually 0.3–0.5 (1) cm long, the blades 2–4 cm long, 0.2–0.4 cm wide; inflorescences (10) 20–45 cm long; perianth white to rose.
Flowering Jul-Nov. Sandy or gravelly slopes, sagebrush communities, oak, pinyon-juniper, and montane conifer woodlands; 1400–2500 m; northern and eastern Arizona (Apache, Cochise, Coconino, Gila, Graham, Greenlee, Mohave, Navajo, Pima, Pinal, Santa Cruz, and Yavapai cos.) and western New Mexico (Catron, Grant, Hidalgo, Luna, Sierra, Socorro, and Taos cos.), south to Janos, Chihuahua, Mexico where apparently extirpated.