Herbs, erect or matted, sometimes scapose, 1–3.5 × 1–2 dm or 0.05–0.2 × 0.5–3.5 dm, floccose or silky-tomentose, grayish. Stems spreading or matted, occasionally with persistent leaf-bases, up to 1/4 or more height of plant; caudex stems matted; aerial flowering-stems erect or nearly so, slender, solid, not fistulose, 1–2 dm and floccose, or (0.1–) 0.02–0.5 (–0.65) dm and silky-tomentose. Leaves basal, 1 per node or fasciculate in terminal tufts; petiole 0.1–2.5 (–3) cm, tomentose to floccose; blade lanceolate or oblanceolate to narrowly elliptic, 1–2.5 (–3) × 0.3–0.5 (–0.8) cm, or 0.4–1.2 × 0.1–0.3 (–0.35) cm, densely white or silvery-tomentose on both surfaces, margins plane. Inflorescences capitate, subcapitate, umbellate-cymose, or cymose, 2–20 × 2–20 cm, floccose or, if matted, 0.3–1 × 0.3–1 cm; branches open and divided 1–3 times, 2–20 cm, floccose or if matted, (0–) 0.3–0.85 cm, silky-tomentose; bracts 3, scalelike, triangular, (0.5–) 1–3 mm. Peduncles absent or erect, slender, 2–15 mm, floccose. Involucres 1 per node or 2–5 per cluster, broadly campanulate, 1.5–4 × (2–) 3–6 (–8) mm, tomentose; teeth 5, erect to spreading, 1–1.5 mm. Flowers 2.5–5 (–6) mm; perianth yellow, densely white-pubescent; tepals connate proximal 1/3, monomorphic, lanceolate to broadly lanceolate; stamens exserted, 3.5–5 mm; filaments glabrous. Achenes brown to dark-brown, 3–4 mm, villous to tomentose.

Distribution

• Generated Map
• Legacy Map

Ariz., Colo., Kans., N.Mex., Okla., Tex.

Discussion

Varieties 3 (3 in the flora).

The Navajo or Diné people consider Eriogonum lachnogynum to be a “life medicine,” making a concoction of shredded roots for the treatment of internal, and some external, ailments. It is often given for diarrhea.

Selected References

None.

Lower Taxa

Eriogonum lachnogynum var. colobum, Eriogonum lachnogynum var. lachnogynum, Eriogonum lachnogynum var. sarahiae

Key

1	Plants erect; inflorescences subcapitate, umbellate-cymose, or cymose; flowering stems 1-2 dm at full anthesis; leaf blades 1-2.5(-3) × 0.3-0.5(-0.8) cm; widespread, not in Arizona	Eriogonum lachnogynum var. lachnogynum
1	Plants cespitose mats; inflorescences capitate; flowering stems 0.01-0.65 dm at full anthesis; leaf blades 0.4-1.2 × 0.1-0.35 cm; Arizona, New Mexico	> 2
2	Flowering stems 0.1-0.5(-0.65) dm, longer than leaves	Eriogonum lachnogynum var. sarahiae
2	Flowering stems (0.01-)0.02-0.05(-0.12) dm, shorter than or just exceeding leaves	Eriogonum lachnogynum var. colobum

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