ORDER 63. UMBELLIFER^. 141 



26. EULOPHUS, N. Calyx limb 5-tootliecl, deciduous. Fr. contracted 

 laterally, somewhat double. Carpels surrounded with large vittaB, riba 

 obsolete. Seed channelled on the inner face. 1C Smooth, branched. Lvs. 

 ternately decompound. Invol. nearly 0. Involucel setaceous. Fls. white. 

 E. Americana N. Lvs. mostly radical ; segm. lance-lin., V long, acute, upper Ivs. in 



8 long, entire seg. ; umb. long-stalked, 3-10-rayed. Prairies, O. to 111. and Tenn. 3-4f. 



27. CICUTA, L. WATER HEMLOCK. Calyx margin of 5 broad seg- 

 ments. Fr. subglobous, didymous. Carpels with 5 flattish, equal ribs, 2 

 of them marginal, intervals filled with single vittse. Seeds terete. ? 1 

 Poisonous. Leaves compound. Stems hollow. Umbels perfect. Invol. 

 few-leaved or 0. Involucels many-leaved. Flowers white. 



1 C. macnlata L. St. streaked with purple ; lower Iv0. triternate and quinate, up- 



per biternate ; segments lanceolate, mucronately serrate, the veins running to the 

 notches. Wet meadows. 3-6f. Smooth, glaucous. Leaflets 13'. Fruit H", 10- 

 ribbed. Umbels 3'. July, August. 



2 C. Imlbifera L. Lvs. biternate ; Ifts. linear, with remote, divergent teeth ; Ivs. of 



the branches 3-cleft or simple, subopposite, bearing bulblets in their axils. Swamps, 

 Can. to Penn. and W. 3 4f. Leaflets 2-^' by \V f . Umbels few. August. 



28. SIUM, L. WATER PARSNIP. Calyx teeth acute. Pet. obcordate, 

 with an inflexed point. Fr. nearly oval, laterally compressed. Carpels 

 with 5 obtusish ribs, and several vittae in each interval. Carpophore undi- 

 vided, if Leaves pinnate, dentate. Umbels perfect, with many-leaved 

 involucra. Flowers white. Stout herbs. 



S. Jatifolium L. St. angular, sulcate; Ifts. oblong-lanceolate, acutely and coarsely 

 serrate, barely acute ; cal. teeth conspicuous. Swamps, Ind. (Green Co. !) and Can. 

 3 4f. Lfts. 4 G' by 12', 2-10-toothed. Umb. with 2030 long (3-40 rays. JL, Aug. 



29. DISCOPLEURA, DC. BISHOP-WEED. Cal. teeth subulate, per- 

 sistent. Fr. ovate, often didymous. Carp. 5-ribbed, the 3 dorsal ribs fili- 

 form, subacute, prominent, the 2 lateral united with a thick, accessory 

 margin ; intervals with single vittse. Sds. subterete. Lvs. capillaceous 

 dissected. Umbels compound. Bracts of the invol. cleft. Fls. white. 



1 D. capillacea DC. Erect or procumbent ; umbels 3-10-rayed ; Ifts. of the invol. 



3 5, mostly 3-cleft ; fr. ovate. Swamps near the coast, Mass, to Ga. 1 2f. June 4-. 



2 D. costata Hale (1850). Branched, erect ; umbels 7-15-rayed ; bracts of the invol. 



10 12, 3-5-parted ; If.-segm. filiform, numerous, apparently verticillate ; fr. with riha 

 and vittse strongly contrasted. Swamps, Ogeechee R. and W. 1 2f, stout. Oct., Nov. 



3 D. Niittallii DC. Erect, tall ; umbel 15-20-rayed ; invol. few-bracted, bracts en 



tire ; fr. broadly cordate-ovate. Wet prairies, Ky. and S. Slender, 2 4f. 



30. CORIANDRUM, L. CORIANDER. Cal. with 5 conspicuous teeth. 

 Outer petals radiant, inflex-bifid. Fr. globous. Carp, cohering, with the 

 5 depressed, primary ribs, and 4 secondary more prominent ones, seeds 

 concave on the face. (T) Smooth. Invol. or 1-leaved. Involucels 3 

 leaved, unilateral. 



C. sativum L. Lvs. bipinnate, lower ones with broad-cuneate Ifts., upper with lin 

 car Ifls. ; carp, hemispherical. Europe. 2f. Cultivated for its spicy fruit. 



