08 Class V. Order II. 



tioled roundish-heart shaped, lobed ; fruit orbicu- 

 lar. Mich. abr. 



One of the largest of our umbelliferous plants. Petioles 

 and nerves of the leaves channelled, bristly. Leafets large, 

 woolly on the under side, deeply cut into lobes, which are again 

 cut, and unequally serrate. Umbels radiate, half a foot in di- 

 ameter, flat. Flowers white. Seeds thin, round-oval, emargin- 

 ate, marked with three short lines. South Boston, Dorchester. 

 June. Perennial. 



84. CONIUM. 

 CONIUM MACULATUM. L. Common Hemlock. 



Seeds unarmed, striate, stem much branched, 

 shining, spotted. Sm. 



A well known poisonous plant. Stem from three to six feet 

 high, round, spotted. Leaves three times pinnate, of a shining 

 green. General involucre of five or seven lanceolate, reflected 

 leafets. Partial involucre of three or four on the outer side of 

 the footstalk. Petals five, oval, curled in at their points. Fruit 

 oval, striate, the ribs often slightly wrinkled. Road sides, and 

 waste ground. June, July. 



The inspissated juice of this plant is extensively used in me- 

 dicine. Care must be taken to distinguish it from a species of 

 JEthusa, nearly allied to M. cynapium, (perhaps a variety) which 

 grows with, and very much resembles it. The ,/E.thusa is a 

 smaller plant, has no general involucre, and its partial ones con- 

 sist of three long pendulous leafets. Their taste is different, 

 that of hemlock being the most nauseous. 



85. ANGELICA, 

 ANGELICA rmquiNATA. Mich. Common Angelica. 



Petiole three parted, its divisions pinnate-five 

 leaved ; leafets cut-toothed, of the terminal leafets 



