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FNA | Family List | FNA Vol. 20 | Asteraceae | Tetradymia

7. Tetradymia tetrameres (S. F. Blake) Strother, Brittonia. 26: 192. 1974.

Tetradymia comosa A. Gray subsp. tetrameres S. F. Blake, Proc. Biol. Soc. Wash. 35: 176. 1922

Shrubs, 30–200 cm. Stems 1–10+, erect (wandlike), unarmed, evenly pannose. Leaves: primaries linear-filiform, flaccid, 10–40 mm; secondaries filiform-spatulate, 10–20 mm, sparsely tomentose. Heads 4–6. Peduncles 1–3 cm. Involucres turbinate, 8–9 mm. Phyllaries 4–5, oval-elliptic. Florets 4–5; corollas pale yellow, ca. 8 mm. Cypselae 5–6 mm, densely pilose (hairs 4–7 mm); pappi of ca. 20, coarse bristles or subulate scales 3–5 mm. 2n = 60.

Flowering late spring–early summer. Deep sands or dunes, sagebrush scrub; 1200–2100 m; Calif., Nev.


 

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