226 UMBELLIFERAE 



pound, the lower long-petiolate ; ultimate divisions scarcely 1 mm. wide, acute ; involucre of a 



single foliaceous bract ; bractlets several, lanceolate, entire or 2-3-lobed at the apex, ciliate ; 



pedicels very short; fruit 6-15 mm. long, the beak 2-7 cm. long, about 2 mm. wide, flat and 



straight with short ascending hairs on the edges. 



Waste places, naturalized from Europe or Asia; Vancouver Island to southern California and throughout 

 the United States. April-June. 



10. OSMORHIZA Raf. Journ. Phys. 89: 257. 1819. 



Slender to rather stout, caulescent, pubescent to glabrate perennials. Leaves ternate 

 or ternate-pinnate; leaf-divisions lanceolate to orbicular, serrate to pinnately lobed. In- 

 volucre none or of a few foliaceous bracts. Rays few, slender, ascending to divaricate and 

 reflexed, unequal. Bractlets few, narrow, reflexed, or none. Flowers white, purple or 

 greenish yellow. Sepals obsolete. Stylopodium conical. Fruit linear-oblong, linear-fusi- 

 form or clavate, obtuse, tapering, beaked or constricted at apex, rounded or caudate at 

 base, flattened laterally, bristly hispid to glabrous ; ribs filiform, acute, often bristly. Oil- 

 tubes obscure or none; seed-face sulcate. [Name from two Greek words meaning smell 

 and root.] 



A genus of about 12 species, natives of North America, western South America and eastern Asia. Type 

 species, Myrrhis Claytonii Michx. 



Fruit glabrous or sparsely bristly toward base, obtuse at base, not caudate; rays ascending to spreading-ascending. 



1. O. occidentalis. 



Fruit bristly hispid, caudate at base with conspicuous tails; rays spreading-ascending to divaricate and reflexed. 

 Involucel wanting; flowers greenish, white or purple. 



Rays and pedicels spreading-ascending; fruit linear-oblong, cylindrical. 



Flowers purplish or greenish; styles 0.5-1 mm. long; fruit 10-13 mm. long, constricted at apex. 



2. O. purpurea. 



Flowers greenish white or white; styles 0.2-0.5 mm. long; fruit 12-20 mm. long, tapering at apex. 



3. O. chilensis. 



Rays and pedicels divaricate; fruit clavate. 4. O. obtusa. 



Involucel present; flowers greenish yellow. 5. O. brachypoda. 



1. Osmorhiza occidentalis (Nutt.) Torr. Western Sweet-cicely. Fig. 3487. 



Glycosma occidentalis Nutt. ex Torr. & Gray, Fl. N. Amer. 1: 639. 1840. 

 Osmorhiza occidentalis Torr. Bot. Mex. Bound. 71. 1859. 

 Myrrhis Bolanderi A. Gray, Proc. Amer. Acad. 7: 346. 1868. 

 Glycosma ambiguum A. Gray, Proc. Amer. Acad. 8: 386. 1872. 



Plants rather stout, 3-12 dm. high, villous at the nodes and pilosulous to glabrate through- 

 out. Leaves oblong to ovate, 10-20 cm. long, 1-3-ternate or ternate-pinnate ; leaf -divisions ob- 

 long-lanceolate to ovate, 2-10 cm. long, serrate and usually incised or lobed; rays 5-12, stiffly 

 ascending to spreading-ascending, 2-13 cm. long; bractlets usually none; pedicels spreading to 

 ascending, 3-8 mm. long; flowers yellow; styles 1 mm. long or less; fruit linear-fusiform, 12- 

 20 mm. long, constricted below apex, obtuse at base, glabrous or rarely sparsely bristly toward 

 base. 



Woods, Transition and Boreal Zones; British Columbia and central California east to Alberta and Colorado. 

 Type locality: "western side of the Blue Mountains of Oregon." May-July. 



2. Osmorhiza purpurea (Coult. & Rose) Suksd. Purple Sweet-cicely. Fig. 3488. 



IVashingtonia purpurea Coult. & Rose, Contr. U.S. Nat. Herb. 7: 67. 1900. 

 fVashingtonia Leibergii Coult. & Rose, op. cit. 66. 

 Osmorhiza purpurea Suksd. Allg. Bot. Zeit. 12: 5. 1906. 



Plants slender, 2-6 dm. high, sparingly hispidulous to glabrous. Leaves deltoid or orbicular, 

 3-10 cm. long, 1-3-ternate; leaf-divisions lanceolate or ovate, 1.5-7 cm. long, coarsely serrate 

 to incised or lobed; bractlets wanting; rays 2-6, spreading-ascending, 2-7.5 cm. long; pedicels 

 spreading-ascending, 5-20 mm. long; flowers purplish or greenish; styles 0.5-1 mm. long; fruit 

 linear-fusiform, 10-13 mm. long, constricted below the short-beaked apex, hispid toward base 

 and caudate at base. 



Woods, Boreal Zones; Alaska south to Washington and Oregon and Del Norte County, California; also 

 northern Montana and Idaho. Type locality: Sitka, Alaska. June-July. 



3. Osmorhiza chilensis Hook. & Arn. Mountain Sweet-cicely. Fig. 3489. 



Osmorhiza chilensis Hook. & Arn. Bot. Beechey 26. 1830; Hook. Bot. Miscel. 3: 355. 1833. 



Osmorhiza Berteri DC. Prod. 4: 232. (September) 1830. 



Osmorhiza divaricata Nutt. ex Torr. & Gray, Fl. N. Amer. 1 : 639. 1840. (Nomen nudum) 



Osmorhiza nuda Torr. Pacif. R. Rep. 41: 93. 1857. 



IVashingtonia brevipes Coult. & Rose, Contr. U.S. Nat. Herb. 7: 66. 1900. 



Plants slender, 3-10 dm. high, hispid, the younger parts densely so. Leaves orbicular, 5-15 

 cm. long, biternate; leaf -divisions ovate-lanceolate to orbicular, 2-6 cm. long, coarsely serrate, 

 incised or lobed; bractlets none; rays 3-8, spreading-ascending, 2-12 cm. long; pedicels spread- 

 ing-ascending, 5-30 mm. long; flowers greenish white; styles 0.2-0.5 mm. long; fruit linear- 



