Osmorhiza berteroi DC.

Osmorhiza nuda Torr. Pacif. R.R. Rep. 4 1 : 93. 1857
? Osmorhiza brevislvlis Bong. Mem. Acad. St.-P£tersb. VI. 2: 142. 1832. Not Osmorhiza brevistylis
DC. 1830. Osmorhiza divaricala Nutt.; T. & G. Fl. N. Am. 1: 639. 1840. (Nomen nudum.) Uraspermum nudum Kuntze, Rev. Gen. 1: 270. 1891. Myrrhis nuda Greene, Fl. Fran. 333. 1892.
Washinglonia divaricala Britton in Britt. & Brown, 111. Fl. 2: 531. 1897. Washinglonia nuda A. Heller, Cat. N. Am. PI. 5. 1898. Waskingtonia intermedia Rydb. Mem. N. Y. Bot. Gard. 1: 289. 1900. Washinglonia brevipes Coult. & Rose, Contr. U. S. Nat. Herb. 7: 66. 1900. Osmorrhiza brevipes Suksd. Allg. Bot. Zeits. 12: 5. 1906.
Osmorhiza divaricala var. nuda M. E. Jones, Bull. Univ. Mont. Biol. 15: 42. 1910. Scandix nuda K.-Pol. Bull. Soc. Nat. Mosc. II. 29: 143. 1916. Scandix divaricala K.-Pol. Bull. Soc. Nat. Mosc. II. 29: 143. 1916. Osmorrhiza nuda var. brevipes Jepson, Madrono 1: 119. 1923. Osmorrhiza nuda var. divaricala Jepson, Madrono 1: 119. 1923. Urasper[m]um brevipes Farwell, Am. Midi. Nat. 12: 70. 1930. Uraspermum divaricala Farwell, Am. Midi. Nat. 12: 70. 1930. Uraspermum barbatum Farwell, Am. Midi. Nat. 12: 70. 1930.
Plants slender, 3-10 dm. high, more or less hispid, the younger portions densely so; leaves orbicular in general outline, excluding the petioles 5-15 cm. long, biternate, the leaflets ovatelanceolate to orbicular, 2-6 cm. long, 1-4 cm. broad, obtuse or acute, coarsely serrate, incised or lobed, appressed-hispid or hispidulous especially on the veins and rachis; petioles 5-16 dm. long; peduncles 5-25 cm. long; involucre usually wanting; involucel wanting; rays 3-8, spreading-ascending, 2-12 cm. long; pedicels spreading-ascending, 5-30 mm. long; flowers greenishwhite, the styles 0.2-0.5 mm. long; carpophore divided about one-fourth of its length; fruit linear-oblong, 1 2-20 mm. long, tapering toward the apex into a slender beak, caudate and densely hispid at the base.
Typb locality: "Shady woods, Napa Valley." California. Bigelow.
Distribution: Quebec; Michigan; Manitoba and Montana to British Columbia and Washington, south to South Dakota, Colorado, southeastern Arizona, and southern California. (Hall &■ Chandler 331, Heller &• Heller 3975.)