UMBELLIFERAE. 685 



the upper mostly reduced to inflated petioles; segments sharply and irregularly 

 dentate or incised, 5-10 cm. long; umbels 7-15 cm. broad, 9-25-rayed; rays 

 4-8 cm. long; pedicels 8-12 mm. long; fruit oval, glabrous, 4-6 mm. long, emar- 

 ginate at the base. In woods, Penn. to N. Car. and Ga. Aug.-Sept. 



2. Angelica atropurpurea L. GREAT OR PURPLE-STEMMED ANGELICA. 

 (I. F. f. 2636.) Stout, 1-2 m. high, glabrous, or the umbel slightly rough-hairy. 

 Lower leaves often 6 dm. wide, biternate and the divisions pinnate, the upper ones 

 smaller, all with broad dilated petioles; segments oval or ovate, serrate and often 

 incised, 3-5 cm. long; umbels sometimes 2.5 dm. broad, 9-25-rayed, the rays 

 5-10 cm. long; fruit broadly oval, 6-8 mm. long, slightly emarginate at the base. 

 In swamps and moist ground, Lab. to Minn., Del. and 111. June-July. 



3 Angelica villosa (Walt.) B.S.P. PUBESCENT ANGELICA. (I. F. f. 2637.) 

 Rather slender, 6-12 dm. high, the umbels and upper part of the stem tomentose- 

 canescent. Lower leaves ternate or biternate, the divisions pinnate, the segments 

 thick, oval, rather finely dentate, obtuse or obtusish, 2-5 cm. long; upper leaves 

 mostly reduced to sheathing petioles; umbels 5-10 cm. broad, 7-3O-rayed; rays 

 2-4 cm. long; fruit broadly oval, emarginate at the base, 6 mm. long, finely pu- 

 bescent; lateral wings about as broad as the carpels; oil-tubes generally 3-6 in 

 the intervals. In dry soil, Conn, to Fla., Minn., Tenn. and Mo. July -Aug. 



Angelica sylv&stris L., of Europe, similar to the preceding, but with acute or 

 acutish leaf-segments, their teeth acuminate, is reported as occurring on Cape Breton 

 Island. 



39. LEVISTICUM Koch. 



A perennial herb, with decompound leaves, the segments broad, cuneate, and 

 large umbels of whitish yellow flowers. Involucre and involucels of numerous 

 narrow bracts. Fruit ovate-oblong, somewhat flattened dorsally; primary ribs 

 winged; oil-tubes solitary in the intervals. A monotypic genus. 



i. Levisticum Levisticum (L.) Karst. LOVAGE. Glabrous, tall. Leaves 

 i-3-pinnately divided, the segments 5-10 cm. long, acute, deeply cleft or those of 

 the upper leaves entire; umbels 7-10 cm. broad. In waste places, Vt., Conn, and 

 N. Y. [Ligusticum Levisticum L.] 



40. CYMOPTERUS Raf. 



Perennial subscapose herbs, with thick roots, pinnately decompound leaves 

 and white flowers (in our species) in peduncled umbels. Involucels of I to numer- 

 ous bracts. Calyx-teeth rather prominent. Stylopodium depressed or wanting. 

 Carpels dorsally flattened, with 3-5 flat equal wings- oil-tubes several or soli- 

 tary in the intervals. [Greek, wave- winged, referring to the fruit. 1 About n 

 species, natives of western and central N. Am. 



Involucre none. ^ c acauKs . 



Involucre prominent. 2 c mont anus. 



1. Cymopterus acaulis (Pursh) Rydberg. PLAINS CYMOPTERUS. (I. F. f. 

 2649.) Stem seldom over 2.5 cm. high. Leaves 0.7-2 dm. long, slender-petioled, 

 pinnate or bipmnate into linear-oblong obtuse segments; umbels slender-peduncled 

 capitate, 2.5 cm. broad or less; rays 2-5 mm. long; involucre none; involucel of a 

 single palmately-lobed bractlet; fruit broadly oval, about 6 mm. in diameter- 



,1-tubes 4 or 5 in the intervals. In dry soil, Minn, and Wis. to Ark. the N. W.' 

 Terr., Br. Col. and Colo. April-May. 



2. Cymopterus montanus T. & G. MOUNTAIN CYMOPTERUS. (I. F. f 

 2650.) Similar to the preceding, somewhat glaucous, or very slightly pubes- 

 cent. Leaves 2-15 cm. high, pinnate, or bipinnate, the segments oblong, obtuse- 

 peduncles stout, 2-15 cm. high; involucre and involucels of broad membranous 

 somewhat united veined bracts; umbels 2-5 cm. broad in fruit; rays several, 6-18 



mm. long; fruit ellipsoid, 6-12 mm. long, the carpels broadly 3-5-winged- oil- 

 tubes 1-3 m the intervals. Dry soil, S. Dak. to Wyo. and Tex. March-April. 



41. POLYTAENIA DC. 



Perennial, nearly glabrous herbs, with pinnately decompound leaves and com- 

 pound umbels of yellow flowers. Involucre "none, or rarely of i or 2 linear bracts. 



