992 LXVII. UMBELLIFERZ. CHEROPHYLLUM. 
flat.— Stout herbs, with large umbels. Invol. deciduous. Involucels 
many-leaved. 
H. LAaNatum. 
Ivs. ternate, petiolate, tomentose beneath; /fts. petioled, round-cordate, 
lobed; fr. orbicular—Penn. to Lab. W. to Oreg. A large, coarse-looking, um- 
belliferous plant, growing about moist, cultivated grounds. Stem about 4f high, 
thick, furrowed, branching, and covered with spreading hairs. Leaves very 
large, on channeled stalks. Leaflets woolly underneath, irregularly cut-lobed 
and serrated. At the top of the stem and branches are its huge umbels, often a 
foot broad, with spreading rays, and long-pointed, lanceolate involucels. In- 
volucre of lanceolate, deciduous leaflets. Petals deeply heart-shaped, white. Jn. 
244. POLYTAZNIA. DC. 
Calyx limb 5-toothed ; 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—6 vittee ; 
seeds plano-convex.—A smooth herb, with bipinnately divided leaves. 
Jnvol. 0. Involucel of setaceous bracts. 
P. Nurratitu. DC. 
Prairies and barrens, Western States! &c. Stem furrowed, scabrous or 
nearly smooth. Lower leaves on long petioles, segments incisely toothed, upper 
ones 3-cleft, lobes entire or with lateral teeth. Umbels terminal and opposite 
the leaves, about 2’ broad. Fruit large, (3” long) tumid and smooth, with a 
thick, corky pericarp, and the flavor of turpentine. May. 
25. DAUCUS. Tourn. 
Aavkos, the ancient Greek name of the carrot. 
Calyx limb 5-toothed, petals emarginate with an inflected point ; 
the 2 outer often largest and deeply 2-cleft; fruit oblong; carpels 
with 5 primary, bristly ribs, and 4 secondary, the latter more promi- 
nent, winged, and divided each into a single row of prickles, and hay- 
ing single vittee beneath ; carpophore entire, free—@ Invol. pinnati- 
fid. Involucels of entire or 3-cleft bracts. Central fl. abortive. 
D. Carota. Carrot. 
St. hispid; petioles veined beneath; Jvs. tripinnate or pinnatifid, the seg- 
ments linear, acute; wmbels dense, concave-—The word kar in Celtic signifies 
ved, hence carrot. Naturalized in fields and by roadsides, abundant in the Mid. 
States. Root fusiform. Stem 2—8f high, branching. Leaves numerous, 
divided in a thrice pinnatifid manner, pale green. Umbels large and very com- 
pact, with white flowers blooming all the summer. Cultivation has produced 
several varieties. Jl.—Sept.§ + 
SusorpeR2.—CAMPYLOSPERM £&. 
The inner surface of the seed deeply furrowed, or with involute margins. 
26. CHA ROPHYLLUM. 
Calyx limb obsolete; petals obovate, emarginate, point inflexed ; 
fruit laterally compressed; carpels with 5 obtuse, equal ribs; inter- 
vals with 2 vitte, commissure deeply suleate—Lwvs. b1- or triternate, 
segments incisely cleft or toothed. Invol. 0, or few-leaved. — Involucel 
many-leaved. 
C. procumBens. Lam. (Scandix procumbens. Linn.) 
Decumbent or assurgent, nearly glabrous; segments of the lvs. pinnatifid, 
with oblong, obtuse lobes; wmbels diffuse, few-flowered, often simple; invol. 0; 
gr. linear-oblong.—@ or @) Moist woods, Ohio, Clark! Ky. Short, to N. J. 
tems 1—2f long, pubescent when young, diffuse, slender. Segments of the 
