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

2. Helianthella parryi A. Gray, Proc. Acad. Nat. Sci. Philadelphia. 15: 65. 1864.

Plants 20–50 cm. Cauline leaves: largest proximal to mid stems; blades usually 5-nerved, oblanceolate or spatulate, faces rough-pubescent. Heads usually borne singly, sometimes 2–3+, ± nodding. Involucres hemispheric or broader, 15–20 mm diam. Phyllaries lanceolate to lance-linear (subequal, margins ciliate). Paleae scarious, relatively soft. Ray florets 8–14; (corollas pale yellow) laminae 25–30 mm. Disc corollas yellow. Cypselae strongly compressed, narrowly obovate (margins ciliate, faces strigose); pappi of 2 ± subulate scales plus 0–4+ shorter scales.

Flowering Jul–Aug. Upper montane forests; 2400–3600 m; Ariz., Colo., N.Mex.


 

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