Perityle bisetosa (Torr. ex A. Gray) Shinners
Family: Asteraceae
Two-Bristle Rockdaisy
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Perennials or subshrubs, 2-12 cm; glabrate, glabrous, minutely hairy, or scabrous-hispidulous. Leaves: petioles (0-)1-7 mm; blades lanceolate, lance-ovate, ovate, or suborbiculate, 4-8 × 2-8 mm, margins entire, serrate, or shallow-lobed. Heads usually borne singly (often obscured by the dense leaves), 7-8(-10) × 3.5-7 mm. Peduncles 0-3 mm. Involucres narrowly campanulate. Phyllaries 8-10(-12), linear to broadly or narrowly lanceolate, 4.5-6 × 1-2 mm. Ray florets 0. Disc florets 11-17; corollas white, tubes 0.8-1 mm, throats tubular to subfunnelform, 1.5-3 mm, lobes 0.8-1 mm. Cypselae oblong to oblanceolate, 1.8-2.2(-2.5) mm, margins notably calloused, glabrous; pap-pi of 2-3(-5) ± flattened bristles 1.5-2.3 mm.