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4b. Aphanostephus ramosissimus de Candolle var. ramosissimus
Plants 20–45 cm. Involucres 3.2–4.8 mm. Ray florets 20–41. Cypselae (1–)1.2–1.4 mm; pappi coroniform, indurate, cupuliform, 0.2–0.6 mm, usually minutely ciliate. 2n = 8.
Flowering (Feb–)Apr–Jul(–Sep). Sand and sandy loam, black loam, silt, caliche, rocky limestone soils, stream bottoms, oak-juniper openings, mesquite pastures, roadsides, fencerows, disturbed sites; 900–2500(–4000) m; N.Mex., Okla., Tex.; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas).
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