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FNA | Family List | FNA Vol. 21 | Asteraceae | Palafoxia

9. Palafoxia rosea (Bush) Cory, Rhodora. 48: 86. 1946.

Othake roseum Bush, Trans. Acad. Sci. St. Louis 14: 175. 1904; Palafoxia rosea var. macrolepis (Rydberg) B. L. Turner & M. I. Morris

Annuals, 10–50 cm. Stems scabrous to glabrate, not stipitate-glandular. Leaf blades linear-lanceolate, 30–60 × 2–6(–10) mm. Involucres ± turbinate. Phyllaries 5–10 × 1–2.5 mm, ± equal, usually scabrellous and stipitate-glandular. Ray florets 0. Disc florets 5–30; corollas actinomorphic, 7–10 mm, throats ± funnelform, shorter than lobes. Cypselae 5–8 mm; pappus scales of inner cypselae (1.5–)3–8 mm. 2n = 20.

Flowering spring–fall. Sandy soils; 100–1500 m; Colo., Kans., N.Mex., Okla., Tex., Wyo.

Plants of Palafoxia rosea with phyllaries 7–10 (versus 5–7) mm and pappus scales 3–8 (versus 1–3) mm have been treated as var. macrolepis. Some specimens are not readily assignable to either variety, and some are not readily assignable to either P. rosea or P. texana. Other specimens referred here to P. rosea closely resemble P. callosa.


 

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