Eriogonum calcareum var. calcareum

Description. Plants herbs, erect, scapose, (0.7) 1–4.5 (5) dm tall, 0.5–1.5 dm across; stems spreading, without persistent leaf bases, up to 1/5 height of plant, the caudex stems slightly matted, the aerial flowering stems erect, slender, solid, not fistulose, (0.6) 1–4 (5) dm long, glabrous or slightly floccose; leaves basal, 1 per node, the petioles (0.5) 1–3 cm long, tomentose, the blades lanceolate to elliptic or oblong, (0.6) 1–3.5 (4) cm long, (0.3) 0.5–1.5 cm wide, densely white-tomentose on both surfaces, the margins plane; inflorescences capitate, 1.5–2.5 cm long, the branches absent, the bracts 3, scalelike, narrowly triangular, 1–2.5 mm long; peduncles absent or erect, slender, 0.1–0.5 (0.6) cm long, glabrous; involucres solitary on a peduncle or 2–5 (8) per cluster, narrowly turbinate to turbinate, 3–5.5 mm long, (1.5) 2–3 (4) mm wide, rigid, sparsely floccose or glabrous, the teeth 6–8, erect, 0.5–1 mm long; flowers 1.5–3 mm long, the perianth pale to bright yellow, glabrous, the hypanthium only at base of perianth, the tepals monomorphic, broadly oblong, the stamens exserted, 2.5–3.5 (4) mm long, the filaments pilose proximally; achenes light brown, 1.5–3 mm long, glabrous.

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