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, g-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 bnxid 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. lon^; fruit broadly oval, 6-8 mm. long, slightly emarginate at the base. 

 In swamps and moist ground, Lub. to Minn., Del. and III. June-July. 



3 Angelica viilosi (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. 



Angeli:a 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 bricts. Fruit ovite- oblong, somewhat flattened dorsally; primary ribs 

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



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

 i-3-pinnately divided, the segments 5- o 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. \JJ.gusticum Levisticum L.j 



40. CYMOPTERUS Raf. (See Appendix.) 



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 m the intervals. [Greek, wave- winged, referring to the fruit] About n 

 species, natives of western and central N. Am. 



Involucre none. ^ c acauKs . 



Involucre prominent. ^ - c montanus . 



1. Cymoptenis 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- 

 mi-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 membranou: 

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

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

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



41. POLYTAENIA DC. 



Perennial, nearly glabrous herbs, with p'nnately decompound leaves, and com- 

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



