Heracleum. XLVII. UMBELLIFERjE. 291 



ly divided, the divisions quinate, segments oblong-, acutish, the upper pair con- 

 nate but not decurrent at base— Dry woods, N. Y. to Car. Stem simple, erect, 

 straight, 3— 5f high. Leaves on petioles 6—10' long. Leaflets 1—2^' long, i 

 as wide, mostly ovate-oblong, olten tapering at base. Umbels 3 or 4, on long, 

 velvety peduncles, 2 — 4' broad. Rays unequal, spreading, densely tomentose. 

 Involucre 0. Involucels of 4—6 bracts, about as long as the rays. Jl. Aug. 



3. A. PEREGRINA. Nutt. 



St. striate, pubescent at summit ; lis. ternately divided, the divisions 

 quinate, segments incisely serrate ; umbel with many slender rays ; invol. ; in- 

 volucels of many leaflets, as long as the umbellets.— Sea coast. Me. and Mass., 

 Pickering. Marginal ribs of the fruit thick and obtuse. 



4. A. OFFICINALIS. Hoifm. (Angelica, Linn.) Garden Angelica. 



St. smooth, round, striate ; lis. bipinnately divided into lobate, subcordate, 

 acutely serrate segments, the terminal one 3-lobed ; sheaths large and saccate. 

 Said to be native in Labrador, &c. Cultivated in gardens occasionally for the 

 sake of the stalks, which are to be blanched and eaten as celery. % 



2LARCHEMORA. DC. 



A fanciful name from Archemortts, who, according to mythology, died by swallowing a bee. 



Calyx limb 5-toothed ; petals obcordate with an inflexed point ; 

 fruit oval, lenticular, compressed on the back ; carpels with 5 ribs, 

 marginal ones broadly winged ; intervals with single large vittae, 

 commissure with 4 — 6 ; seeds flat. — % Invol. 0. or few-leaved. Invol- 

 ucels many-leaved. 



A. RiGiDA. DC. (CEnanthe. Nutt.) Water Dropwort. Cow-ba7ve. 



,S;. rigid, striate, smooth ; Ivs. pinnately divided, smooth, IJis. 3 — 11, ob- 

 long-lanceolate or ovate, entire or remotely toothed, sessile ; 2anbels spreading, 

 smooth.— Swamps, Mich, to Flor. and La. Stem 2 — 4f high, slender, terete. 

 Leaflets 2 — i' by 3 — 9", varying in outline in the same plant. Umbels 2 — 3, 

 of many slender rays. Petals white. Fruit with subequal greenish ribs, and 

 large, purple vitta; filling the intervals. Commissure white. Sept.— Said to be 

 poisonous. 

 ^. (CEnanthe ambigua. Nutt.) Lfts. long-linear, mostly entire. 

 22. PAS TIN AC A. Tourn. 



Lat. pastm, food or repa.st ; from the nutritive properties of the root. 



Calyx limb 5-toothed ; petals broad-lanceolate, with a long inflexed 

 point ; fruit much compressed, oval, with a broad margin ; carpels 

 with 5 nearly obsolete ribs ; intervals with single vittae ; carpophore 

 2-parted ; seeds flat. — ® Rt. fusiform. Invol. mostly ; involucels 

 or few-leaved. Fls. yellow. 



P. SATivA. Common Parsnep. Wild Parsnep. 



Lis. pinnate, downy beneath ; lfts. oblong, incisely toothed, the upper one 

 3-lobed.— (D The parsnep is said to have been introduced, but it grows wild abun- 

 dantly in fields, by fences, &c. The root is fusiform, large, sweet-flavored, 

 esculent, as every one knows, in its cultivated state, but in its wild state becomes 

 hard, acrid and poisonous, and much dwindled in size. Stem 3f high, erect, fur- 

 rowed, smooth, branching. Umbels large, terminal. Flowers yellow, small. 

 Fruit large, flat. The abundance of saccharine matter in the cultivated root, 

 renders it wholesome and nutritious. Jl. 



23. HERACLfiUM. 



Named after the hero Hercules ; it being a rank, robust plant. 



Calyx limb of 5 small, acute teeth ; petals obcordate, with the point 

 inflexed, often radiant in the exterior flowers, and apparently deeply 

 2-cleft ; fruit compressed, flat, with a broad, flat margin, and 3 ob- 

 tuse, dorsal ribs to each carpel ; intervals with single vittae ; seeds 

 25* 



