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15a. Perityle bisetosa (Torrey ex A. Gray) Shinners var. appressa A. M. Powell, Sida. 3: 178, fig. 2. 1967.
Plants 4–8 cm. Leaves mostly alternate; petioles 3–7 mm; blades ovate, margins with 2–3 serrations or lobes, faces glabrous or minutely hairy; pappi of 2–3(–5) bristles (1–3 reduced). 2n = 34.
Flowering spring–fall. Caprock bluffs; of conservation concern; 1200 m; Tex.; Mexico.
Variety appressa is restricted to caprock bluffs in southeastern Brewster County and adjacent Mexico.
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