UMBELLIFER.E. (PARSLEY FAMILY.) 193 



12. ARCHANG^ILICA, 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. hirsuta, 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 umbellets ; pedun- 

 cles and fruit downy, 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. JETHUSA, 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 aWio, to burn, from the acrid taste.) 



1. JE. CYNA.PIUM, 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.) 

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