ORDER LXI. UMBKLLIFERJi. 335 



Seeds somewhat semi-terete. Leaves ternate or 2 — 3 ternate. 



Iiivolncrc composed of a few short, siibuhite leaflets; involucels 

 nearly the same. 



1. L. act.eifo'lium, (Mich.) {AngrUca lucida of Elliott.) Root 

 lar^^e, with a strong odor; n fiivorite lood for hogs. Leaves triter- 

 nately divided ; segments ovate, with deep sc'rrature^^. Umbels nuuK-r- 

 ous, forming loose, naked, somewhat verticillate panicles, all but the 

 terminal one abortive. jfruiY ovate-oblong. — White. If. July. Mid- 

 dle Geo. 3 — 6 feet. Lavage. White-root. 



Tribe V.— ANGELICE'JE. 



Fruit with a double-winged margin. Umbels compound. 

 Seeds convex on the back. 



Genus XVI.— ARCHAXGEL'ICA. Raf. 5—2. 



(From the Greek arche, original, and angelica.) ' 



Limb of the calyx 5-toothed. Petals ovate, entire, with an 

 incurved point. Fruit compressed on the back. Carjjels with 

 3 dorsal ribs, with 2 marginal wings. Perennial herbs. Leaves 

 bipinnately divided ; petioles dilated at the base. Involucre 

 almost wanting ; involucels many-leaved. 



1. A. hirsu'ta, (T. <fe G.) {Angelica triqriinata of Elliott.) Stem pu- 

 bescen: near the summit. Leaves pinnate ; segments ovate-oblong, 

 serrate, the upper connate. Umbels on long peduncles, densely pubes- 

 cent ; rays rather long, spreading; involucels 6 — 10-leaved, sometimes 

 unilateral. Fruit slightly winged, oblong. — White or greenish. If. 

 July — Aug, So. Car. and Geo, 2 — 5 feet. 



2. A. dexta'ta, (Chap.) Stem slender, glabrous, finely striate. Lower 

 leaves ternately divided ; petioles long and slender; segments ovate- 

 lanceolate, coarsely toothed, cuneate ; upper leaves with narrow seg- 

 ments and pinnatitid, toothed. Jjivolucel 4 — 6-leaved. Petals broadly 

 ovate ; wings of the seed thin. — Middle Florida, 



Tribe VL— PEUCEDA'NE.^. 



Fruit compressed on the back, with an entire, marginal 

 wing. Umbels compound. 



Genus XVIL— TIEDMAN'jS'IA. D, C. 5—2. 

 (In honor of Prot Tiedmann, of Heidelberg.) 



Limb of the calyx 5-toothed. Petals ovate, with a narrow, 

 inflexed point. Fruit compressed on the back, obovate. Car- 

 pels ribbed ; lateral ones dilated into a broad margin. Seeds 

 flat. A biennial plant. 



I. T. TETiETiFo'r.iA, (D. C.) Ste7n fistulous, erect, branvhinir above. 

 Leaves simple, terete, 4 — 8 inches long, divided by numerous transverse 

 partitions. Involucre many-leaved, subulate, persistent ; involucel eim- 



