Oedeb 63.— UMBELLIPEEiE. 379 



cuneate, petiolate, angular-toothed, lower stem Its. 3-elefl, with lance-linear, cut- 

 toothed segm., upper all linear or fiilform, clustered, obtuse, entire ; ped. longer 

 than the Ivs. ; hds. very small, globular; imol. not distinguishable from the entire 

 scales. — i^ Tallahaaaee (Mettauer) to Apalachicola (Chapman). St. 10 to 20' 

 long. Hds. 2" diam. (E. gracile Baldw.) 



4 Ij. aroia^ticum Baldw. Lvs. pinnate segm. cuspidate, entire, cartilaginous along 

 the margin, the 3 upper more distant and conspicuous ; Ifts. of the iuvol. about 

 5, 3-cleft ; hda globous, long-pedunculate ; scales tricuspidate. — y In dry pine 

 barrens, Pla. Sts. 9 to 18' long, assurgent, beset with the short (1') bristly, pin- 

 nate lvs. Hds. many, 6 to 8" diam. Aug. — Nov. 



5 E. virgdtum Lam. Lms. oval or oblong, thin, abruptly petiolate, dentate-serrate, 

 the upper cauline, subsessile ; invol. of 6 to 8 linear Iva., longer than the de- 

 pressed, globous hds. ; scales tricuspidate. — % "Wet pine barrens, S. Car. to Fla. 

 and La. St. 2 to 4f high, simple or cymously branched with slender, virgate 

 branches. Hds. 6'' diam. i'la. pale blue or white. JL — Sept. (E. ovalifolium Mx.) 



6 E. Virginiinum Lam. Lvs. linear-lanceolate, uncinately serrate, tapering to 

 both ends ; invol. of f to 8 linear Ifts., longer than the hds., 3-eleft or spinous-den- 

 tate ; scales tricuspidate. — 1|. Marshes, N. J. (Rev. J. Holton) to Ohio and La. 

 St. hollow, 3 to 4f high, branched above. Lvs. 6 to 10' by 5 to 10", upper ones 

 much smaller. Hds. numerous, less than 1' io length. Fls. pale blue, or nearly 

 white. Jl., Aug. (B. aquaticum Mi.) 



7 E. MettaCleri. Tall, simple, erect ; lvs. linear, few, distinctly dent-serrate, cori- 

 sisting chiefly of tlie fistuldr, infaied, membranom midvei/n, jointed by transverse 

 partitions within and narrowly wmged by the lamina ; bracts of the invol. 8 to 

 10, silvery above, longer than the head, with long, cuspidate teeth ; scales tri- 

 cuspidate. — '4- In wet places, Newport, Fla. (Mettauer.) The tallest of our spe- 

 cies, often 6f high. Its characteristic, hollow-jointed lvs. are 12 to 20' long. — • 

 Allied to E. Yirginianum Lam. 



5. POLYTAE'HIA, DC. (Gr. TroXi)?, many, Taivia, vittce.) Calyx 

 limb 5-tootlied ; petals with a long inflexed point ; fruit oval, glabrous, 

 lenticularly compressed on the back, with a thickened, corky margin ; 

 ribs obscure or obsolete ; commissure with 4 to 6 vittse ; seeds plano- 

 convex. — A smooth herb, with bipinnatcly divided lvs. Invol. 0. In- 

 volucel of setaceous bracts. 



P. Nuttdllil DC. Prairies and barrens, W. States, etc. St. furrowed, scabrous ot 

 nearly smootli. Lower lvs. on long petioles, segm. incisely toothed, upper ones 

 3-cleft, lobes entire or with lateral teeth. Umbels terminal and opposite the lvs., 

 about 2' broad. Fruit large (3" long) tumid and smooth, with a thick, corky 

 pericarp, and the flavor of turpentine. May. 



6. PASTINATA, Toum. Parsnip. (Lat. pastus, {ood or repast; 

 from the nutritive properties of the root.) Calyx limb 5-toothed ; 

 petals broad-lanceolate, with a long inflexed point ; fruit much com- 

 pressed, oval, with a broad margin ; carpels with 5 nearly obsolete 

 ribs ; intervals with single vittas ; carpophore 2-parted ; seeds flat. — 

 (g) Rt. fusiform. Invol. mostly ; involucels or few-leavod. Fls. 

 yellow. 



P, sativa L. Lvs. pinnate, downy beneath, Ifts. oblong, incisely toothed, the upper 

 one 3-lobed. — Grows wild abundantly in fields, by fences, etc. The root is fusi- 

 form, large, sweet flavojed, esculent, as every one knows, in its cultivated state, 

 but in its wild state becomes hard, acrid and poisonous, and much dwindled ia 

 size. St. 3f high, erect, furrowed, smooth, branching. Umbels large, terminal. 

 Fls. yellow, small. Pr. large, flat. JL § :]: 



7. HERAC'LEUM, L. Cow Parsnip. (Named after the hero Her- 

 cules ; it being a rank, robust plant.) Calyx limb of 5 small, acute 

 teeth ; petals obcordate, •with the point inflexed, often radiant in the 



