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FNA | Family List | FNA Vol. 3 | Ranunculaceae | Myosurus

4. Myosurus cupulatus S. Watson, Proc. Amer. Acad. Arts. 17: 362. 1882.

Herbs , 3.3-16 cm. Leaf blades linear or very narrowly oblanceolate, 1.8-9.5 cm. Inflorescences: scapes 2.2-12 cm. Flowers: sepals faintly 3-veined, scarious margins narrow or absent; petal claw 1-3 times as long as blade. Heads of achenes 13-42 × 2-3 mm, long-exserted from leaves. Achenes: outer face orbiculate or sometimes square, 0.8-1.2 × 0.6-1 mm, 0.8-1.2 times as high as wide, bordered by prominent ridge; beak 0.6-1.2 mm, 0.6-1.2 times as long as body of achene body, weakly divergent from outer face of achene, heads of achenes thus roughened by projecting achene beaks. 2 n =16.

Flowering late winter-spring (Mar-May). Dry hillsides or canyon bottoms in shrubland; 350-1800 m; Ariz., Calif., Colo., Nev., N.Mex., Tex., Utah; Mexico (Baja California and Sonora).

The Navaho-Ramah used Myosurus cupulatus medicinally both externally and internally as an aid for ant bites or swallowing an ant (D.E. Moerman 1986).


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