Eriogonum nudum var. oblongifolium

Plants 5–10 (18) dm tall; aerial flowering stems not fistulose, 2–5 (8) dm long, tomentose to floccose; leaves basal, the blades 2–4 cm long, 1.5–2 cm wide, tomentose abaxially, thinly floccose adaxially, the margins plane; inflorescences cymose, 20–50 (100) cm long, 10–50 cm wide, the branches tomentose to floccose; involucres 3–6 per cluster, 3–5 mm long, tomentose; flowers 3–4 mm long, the perianth white to rose or yellow, pubescent. 2n = 40.

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Eriogonum nudum var. nudum

Plants 3–10 dm tall; aerial flowering stems not fistulose, (1.5) 2–4 dm long, glabrous; leaves basal, the blades 1–5 cm long, 0.5–2 cm wide, tomentose abaxially, thinly floccose or glabrous adaxially, the margins plane; inflorescences cymose, 20–50 cm long, the branches glabrous; involucres 2–5 per cluster, 3–5 mm long, glabrous or sparsely pubescent; flowers 2–3 mm long, the perianth white, rarely yellow, glabrous. 2n = 40.

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Eriogonum nudum var. westonii

Plants 3–6 dm tall; aerial flowering stems slender, 1–3 dm long, glabrous; leaves basal, the blades 1–2 cm long, 0.3–0.8 cm wide, tomentose abaxially, tomentose to floccose adaxially, the margins undulate-crisped; inflorescences umbellate or compactly cymose, 3–15 cm long, 3–20 cm wide, the branches glabrous; involucres 1–4 per cluster, 3–5 mm long, glabrous; flowers 2.5–3 mm long, the perianth yellow or, infrequently, white, pubescent.

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Eriogonum nudum var. auriculatum

Plants 5–15 (20) dm tall; aerial flowering stems occasionally fistulose, 2–5 (10) dm long, glabrous; leaves sheathing, the blades 3–7 cm long, 2–4 cm wide, tomentose abaxially, subglabrous or glabrous adaxially, the margins strongly undulate-crisped; inflorescences cymose, 30–100 (150) cm long, 10–80 cm wide, the branches glabrous; involucres (2) 3–5 per cluster, 3–4 mm long, glabrous or rarely sparsely pubescent; flowers 2.5–3 mm long, the perianth white to pink, rarely yellowish, glabrous or sparsely pubescent. 2n = 80.

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Eriogonum nudum var. pubiflorum

Plants 3–8 (10) dm tall; aerial flowering stems not fistulose, 1–3 dm long, glabrous; leaves basal, the blades 1–4 cm long, 0.5–2 cm wide, tomentose abaxially, floccose or glabrous adaxially, the margins plane; inflorescences cymose, 20–70 cm long, 20–40 cm wide, the branches glabrous; involucres 2–7 per cluster, 3–5 mm long, glabrous or sparsely pubescent; flowers 2.5–3 mm long, the perianth white or, infrequently, yellow, pubescent. 2n = 40. Continue reading

Eriogonum nudum var. deductum

Plants 2–3 (5) dm tall; aerial flowering stems not fistulose, 0.5–1.5 dm long, glabrous; leaves basal, the blades 1–2 cm long, 0.3–0.8 (1) cm wide, tomentose abaxially, floccose or glabrous adaxially, the margins plane; inflorescences cymose, 5–15 cm long, 5–15 (20) cm wide, the branches glabrous; involucres 1 (2) per cluster, 2.5–3.5 mm long, glabrous or sparsely pubescent; flowers 2–3 mm long, the perianth white, glabrous. 2n = 40.

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Eriogonum nudum var. indictum

Plants 5–8 (10) dm tall; aerial flowering stems strongly fistulose, 2.5–3.5 dm long, glabrous; leaves sheathing, the blades 1–6 cm long, 1–2 (3) cm wide, densely tomentose abaxially, less so to floccose adaxially, the margins strongly undulate-crisped; inflorescences cymose, 25–50 cm long, 15–25 cm wide, the branches glabrous; involucres 1 per node, 4–5 mm long, glabrous; flowers 2.5–3 mm long, the perianth pale yellowish- white to yellow or white, glabrous. 2n = 80.

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