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Osmorhiza Raf., Jour. de Phys. 89: 257. 1819. C.B. Clarke in Hook. f., Fl. Brit. Ind. 2: 690. 1879; Constance & Shan, Gen. Osmo., Univ. Calif. Pub. Bot. 23: 116, 1948.; Hiroe, Umb. Asia 1: 29. 1958.
Plants perennial. Leaves ternate or ternate-pinnate; leaflets lanceolate to oval. Rays up to 12. Involucre of 1 or 2 linear bracts or lacking. Involucel of several linear bractlets or lacking. Flowers white, greenish-yellow or purple. Calyx teeth obsolete. Fruit linear to cylindrical, fusiform or clavate, hirsute to bristly; apex beaked or tapering; ridges thin; vittae obscure. Inner seed face concave to sulcate.
A genus of about a dozen species from North and South America and Asia.
Lower Taxon
Related Synonym(s):
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