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47. Eriogonum prociduum Reveal, Aliso. 7: 417. 1972.
Herbs, matted, scapose, 0.3-1 × 1-3 dm, glabrous, greenish. Stems spreading, with persistent leaf bases, up to 5 height of plant; caudex stems matted; aerial flowering stems scapelike,weakly erect, slender, solid, not fistulose, 0.2-0.8(-0.9) dm, glabrous. Leaves basal, fasciculate in terminal tufts; petiole 0.2-1.5(-2) cm, tomentose; blade oblanceolate to spatulate or elliptic to ovate, 0.3-1.5 × 0.15-0.8 cm, densely white-tomentose on both surfaces or floccose and greenish adaxially, margins plane. Inflorescences capitate, 0.8-1.2 cm wide; branches absent; bracts 3-6, triangular, scalelike, 1-3(-4) mm. Peduncles absent. Involucres 4-7 per cluster, campanulate, 2-4 × (2.5-)3-4 mm, weakly rigid, glabrous or sparsely floccose; teeth 5-6, erect, 0.8-1.4 mm. Flowers 2-4 mm; perianth bright yellow, glabrous; tepals connate proximal 4- 3, monomorphic, oblong to oblong-obovate; stamens exserted, 2.5-3.5 mm; filaments pilose proximally. Achenes light brown, 2-3.5 mm, glabrous.
Varieties 2 (2 in the flora): w United States.
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1 |
Leaf blades 0.3-1(-1.4) × 0.15-0.4(-0.6) cm, tomentose on both surfaces; petioles 0.2-0.5 cm; ne California, nw Nevada, and sc Oregon |
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47a var. prociduum |
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Leaf blades 0.7-1.5 × 0.3-0.8 cm, floccose and greenish adaxially; petioles 1-1.5(-2) cm; se Oregon, sw Idaho, and nc Nevada |
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47b var. mystrium |
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