136 OUDEK G3. UMBELL1FER.E. 



2 E. Baldwin!! Spr. Sts. prostrate, filiform ; rt. Ivs. wedge-oblong, st. Ivs. 3-parted, 



segm. lance-liu., cut-toothed; invol. scales and chaft' alike : hds. oblong. Fla. KX. Bine. 



3 E. prostratum Baldw. Sts. prostrate, filiform, rooting ; Ivs. of two forms at the 



same node, small, some ovate, some 3-parted with lance-linear segm. ; invol. scales 



linear, longer than the small oblong heads ; fls. blue. 2 Swamps, Ga. Fla. 6-12'. Jn.+ 



. folioMiim. Bracts of the invol. leafy, twice longer than the heads. Fla. La. 



4 E. aroitmtieum Baldw. Sts. assurgent ; vs. short (10, pinnate, witi cuspidate 



segm., the 3 terminal largest; hds. globous (6 S") ; invol. scales 5. Dry. Fla. 9 iy. 



5 E. iflef taiker!. Erect, tall ; Ivs. linear-terete, consisting chiefly of the fistuloua, 



jointed midvein, barely winged and toothed ; bracts 810, leafy. Wet. Fla. 4- Of. 



6 E. Virginian um Lam. Erect; Ivs. lance-oblong to linear, flat, the lower long- 



stalked, upper uncinate-serrate ; bracts longer than the roundish head, u Swamps. 

 2 4f. Hds. in umbel-like cymes, numerous, 5 6". Varies with Ivs. all linear. Jl. Aug. 



7 E. vlrgatum Lam. Erect; Ivs. oval or oblong, thin, petiolate, dentate, the upper 



sessile ; bracts 68, longer than the depressed, cynious heads, u Wet, S. 2 4f. 



5. HERACLEUM, L. Cow PARSNIP. Calyx 5-toothed. Pet often 

 radiant in the exterior flowers, and apparently deeply 2-deft. Fruit com- 

 pressed, flat, with a broad, flat margin, and 3 obtuse, dorsal ribs to each 

 carpel ; intervals with single vittae. Seeds flat. U Stout, with large um- 

 bels. Involucre deciduous. Involucels many-leaved. 



H. la ii iit ii in L. Villous ; Ivs. ternate, petiolate, tomentous beneath ; Ifts. petioled, 

 round-cordate, lobed ; fr. orbicular. Can. to N. Car. and W. 4f. Lvs. very large. June. 



6. POLYTJENIA, DC. Calyx 5-toothed. Fruit oval, glabrous, com- 

 pressed on the back, with a thickened, corky margin. Commissure with 4 

 to 6 vittae. Seeds plano-convex. ^ A smooth herb, with bipinnately- 

 divided leaves. Involucre 0. Involucel of setaceous bracts. 



P. Nuttallil DC. Prairies, W. 2 3f. Smoothish. Lower leaves long-stalked. Um 

 bels2'. Fruit3". May. 



7. PEUCEDANUM, L. Fruit ovate, oval, or roundish, compressed 

 on the back, the margin acute or broadly winged, carpels plane or convex, 

 intervals with single vittae. Seeds plano-convex. U (j) Smooth, rarely 

 pubescent. Lvs. pinnately or ternately divided or decompound. Umbels 

 compound, with or without involucra. Fls. yellow or white. Fig. 238. 



EUPEUCEDANUM. Cal. 5-toothed. Lvs. pinnatisect. Fr. narrowly winged. Yellow.. .1, 2 

 ARCHEMORA. Cal. 5-toothed. Lfts. 111, narrow. Fr. narrowly winged. Fls. white. 8-5 

 PASTINACA. Calyx teeth 0. Lfts. oval. Fruit broadly winged. Flowers yellow No. G 



1 P. foenlculaceiim N. and other species with radical, pinnatisect leaves grow in 



Kansas, and W. (Rev. J. II. Carruth.) 



2 P. GRAVKOLENS. 2HU. Lvs. cauline, tripinnate : seg. capillary ; unib. on long stalks ; fr. 



oval, flat, brown, aromatic, pun-gent, medicinal. Spain. 2f. (Anethuin, C-B.) 



3 P. rigidum Oowbane. St. rigid, striate ; Ivs. pinnate : Ifts. 311, lance-ovate, sub 



entire ; umb. 2 or 3, spreading, with slender rays ; fr. with large purp. vittae. 21 Swamps, 

 N. Y., W. and S. 2 5f. August. 

 /3. ambtg-ua^ has the leaflets linear and entire. 



4 P. tern a turn. Stem slender, smooth; Ivs. on long petioles, ternate; segm. very 



long, linear, entire, 3-veined; invol. 0-3-leaved ; involticel 4-G-leaved. Swamps, in 

 pine-barrens. S. 2 3f. Sept. Nov. (Nenrophylhim longifolium, C-B.) 



5 P. teretiloliura. Tall, slender, smooth ; Ivs. reduced to fistular. jointed phyllodia, 



terete, tapering, G 10' long; fr. 3"; invol. 5-C-leaved. V Wet, S. (Tie> nannia, C-B.? 



