208 UMBELLlFER^E. (PARSLEY 



1. Z. atirea, Koch. Leaves (except the uppermost) 2- 3-ternate, the radi- 

 cal very long-petioled ; leaflets ovate to lanceolate, sharply serrate ; rays 15- 

 25, stout (1 - 2' long) ; fruit oblong, about 2" long. (Thaspium aureum, var. 

 apterum, Gray, Manual.) Atlantic States, west to Minn, and Tex. 



Var. Bebbii, Coult. & Hose. A more slender mountain form, with leaf- 

 lets more coarsely serrate, the radical leaves smaller and more simple ; rays 

 2-8, slender (2-3' long) ; fruit oval, 1 - 1" long. W. Va. and Va. to Ga. 



2. Z. cordata, DC. Radical leaves mostly long-petioled, cordate or even 

 rounder, crenately toothed, very rarely lobed or divided ; stem-Leaves simply ter- 

 nate or quinate, with the ovate or lanceolate leaflets serrate, incised, or some- 

 times parted ; fruit ovate, \\" long. (Thaspium trifoliatum, var. apterum, Gray, 

 Manual.) Same range as the preceding, but extending farther westward. 



25. CABUM, L. CARAWAY. 



Calyx-teeth small. Fruit ovate or oblong, glabrous, with filiform or incon- 

 spicuous ribs ; oil-tubes solitary ; stylopodium conical ; seed-face plane or nearly 

 so. Smooth erect slender herbs, with fusiform or tuberous roots, pinnate 

 leaves, involucre and involucels of few to many bracts, and white (or yellow- 

 ish) flowers. (Name perhaps from the country, Caria.) 



C. CARUI, L. (CARAWAY.) Leaves pinnately compound, with filiform di- 

 visions. Naturalized in many places, especially northward. (Nat. from Eu.) 



C. PETROSEL!NUM, Benth., the common PARSLEY, from Europe, with 3- 

 pinnate leaves, ovate 3-cleft leaflets, and greenish yellow flowers, is occasion- 

 ally found as an escape from cultivation. (Petroselinum sativum, Hoffm.) 



26. CICTJTA, L. WATER-HEMLOCK. 



Calyx-teeth prominent. Fruit oblong to nearly orbicular, glabrous, with 

 strong flattish corky ribs (the lateral largest) ; oil-tubes conspicuous, solitary ; 

 stylopodium depressed ; seed nearly terete. Smooth marsh perennials, very 

 poisonous, with pinnately compound leaves and serrate leaflets, involucre usu- 

 ally none, involucels of several slender bractlets, and white flowers. (The 

 ancient Latin name of the Hemlock.) 



1. C. maculata, L. (SPOTTED COWBANE MUSQUASH ROOT. BEAVER- 

 POISON.) Stem stoat, 2-6 high, streaked with purple; leaves 2-3-pinnate, 

 the lower on long petioles ; leaflets lanceolate to oblong-lanceolate (1-5' long), 

 acuminate, coarsely serrate, the veins passing to the notches; pedicels in the 

 umbellets numerous, very unequal ; fruit broadly ovate to oval, 1 - 1-J-" long. 

 Throughout the U. S. Aug. 



2. C. bulbifera, L. Rather slender, 1-3 high; leaves 2-3-pinnate 

 (sometimes appearing ternate) ; leaflets linear, sparsely toothed (1-2' long) ; 

 upper axils bearing clustered bulblets ; fruit (rare) scarcely 1" long.- Common 

 in swamps, N. Scotia to Del., west to Minn, and Iowa. 



27. -3E G O P O D I U M, L. GOUTWEED. 



Calyx-teeth obsolete. Fruit ovate, glabrous, with equal filiform ribs, and 

 no oil-tubes; stylopodium conical and prominent; seed nearly terete. A 

 coarse glabrous perennial, with creeping rootstock, biternate leaves, sharply 

 toothed ovate leaflets, and rather large naked umbels of white flowers. (Name 

 from crf, goat, and Tr6titov, a little foot, probably from the shape of the leaflets.) 



JE. PODAGRARIA, L., a common and troublesome weed in Europe, is re- 

 ported from R. I. to Del. and E. Penn. 



