Mexican Sweetcicely

Osmorhiza mexicana Griseb. Abh. Ges. Wiss Gott. 24: 147. 1879.
Uraspermum aristalum var. brevistyle Kuntze, Rev. Gen. 1: 270, as to Costa Rican plants. 1891. Washinglonia mexicana Rose, Contr. U. S. Nat. Herb. 8: 337. 1905. Plants slender, 4-8 dm. high, somewhat pilose throughout; leaves ovate-deltoid in general outline, excluding the petioles 5-15 cm. long, ternate-pinnate, the leaflets ovate, 1.5-4 cm. long, 15-25 mm. broad, coarsely serrate, incised and pinnately lobed toward the base, pilose especially beneath; petioles 8-20 cm. long; peduncles 7-14 cm. long; involucre wanting; involucel of several linear, ciliate bractlets, 2-6 mm. long; rays 3-4, spreading-ascending, 25-75 mm. long; pedicels spreading-ascending, 4-6 mm. long; flowers greenish-yellow; the styles 0.3-0.5 mm. long; carpophore divided about one-fourth of its length; fruit oblong, 15-20 mm. long, tapering into a short beak at the apex, caudate at the base, hispid on the ribs.
Type locality: Mexico, Schaffner.
Distribution: Nuevo Le6n and Chihuahua, south to Puebla, Guatemala, and Costa Rica