UMBELLIFER.E. (PARSLEY FAMILY.) 193 



12. AECHANGELICA, Hoffm. Archangelica. 



Calyx-teeth short. Seed becoming loose in the pericarp, coated with numer- 

 ous oil-tubes which adhere to its surface. Otherwise as in Angelica, from which 

 the species have been separated, with hardly sufficient reason. 



1. A. hil'SUta, Torr. & Gr. Woolly or downy at the top (2° -5° high), 

 rather slender ; leaves twice pinnately or ternately divided ; leaflets thickish, 

 ovate-oblong, often blunt, serrate ; involucels as long as the umbellcts ; pedun- 

 cles and fruit dainty, broadly winged. (Angelica triquinata, Nutt.) — Dry open 

 woods, New York to Michigan, and southward. July. — Flowers white. 



2. A. atropurp urea, Hoffm. (Great Angelica.) Smooth ; stem dark 

 purple, very stout^ (4° - 6° high), hollow; leaves 2 - 3-ternately compound; the 

 leaflets pinnate, 5-7, sharply cut serrate, acute, pale beneath ; petioles much 

 inflated; involucels very short ; fruit smooth, winged. (Angelica triquinata, 

 Michx.) — Low river-banks, New England to Penn., Wisconsin, and northward. 

 June. — Flowers greenish-white. Plant strong-scented. 



3. A. Gmelini, DC. Stem a little downy at the summit (l°-3° high) ; 

 leaves 2 - 3-ternately divided ; the leaflets ovate, acute, cut-serrate, glabrous ; in- 

 volucels about as long as the umbellets ; fruit oblong with 5 thick and corky wing- 

 like ribs to each carpel, the marginal ones little broader than the others. (A. pere- 

 grina, Nutt., & ed. 2.) — Rocky coast of Massachusetts Bay and northward. 

 July. — Flowers greenish-white. Plant little aromatic. Fruit so thick and so 

 equally ribbed, rather than winged, that it might be taken for a Ligusticum. 



13. CONIOSELINUM, Fischer. Hemlock-Parsley. 



Calyx-teeth obsolete. Fruit oval : the carpels convex-flattish and narrowly 

 3-winged on the back, and each more broadly winged at the margins : oil-tubes 

 in the substance of the pericarp, 1 -3 in each of the intervals, and several on 

 the inner face. — Smooth perennials, with finely 2 - 3-pinnately compound thin 

 leaves, inflated petioles, and white flowers. Involucre scarcely any : leaflets of 

 the involucels awl-shaped. (Name compounded of Conium, the Hemlock, and 

 Selinum, Milk-Parsley, from its resemblance to these two genera.) 



1. C. Canadense, Torr. & Gr. Leaflets pinnatifid ; fruit longer than the 

 pedicels. — Swamps, Vermont to Wisconsin northward, and southward through 

 the Alleghanies. Aug. — Herbage resembling the Poison Hemlock. 



14. J1THUSA, L. Fool's Parsley. 



Calyx-teeth obsolete. Fruit ovate-globose ; the carpels each with 5 thick 

 sharply-keeled ridges: intervals with single oil-tubes. — Annual, poisonous 

 herbs, with 2 - 3-ternately compound and many-cleft leaves, the divisions pin- 

 nate, and white flowers. (Name from aWto, to burn, from the acrid taste.) 



1. 2E. Cynapicm, L. Divisions of the leaves wedge-lanceolate ; involucre 

 none : involucels 3-leaved, long and narrow. — About cultivated grounds, New 

 England to Penn. July. — A fetid, poisonous herb, with much the aspect of 

 Poison Hemlock, but with dark-green foliage, long hanging involucels, and 

 unspotted stem. (Adv. from Eu.) 

 13 



