192 UMBELLIFER^E. (PARSLEY FAMILY.) 



ones distant from them and near the margin : an oil-tube in each interval, of the 

 length of the fruit. Petals yellow, roundish, entire ; none of the flowers radiant. 

 — Chiefly biennials, with spindle-shaped roots, and pinnately-compound leaves. 

 Involucre and involucels small or none. (The Latin name, from pastus, food.) 

 1. P. sativa, L. (Common Parsnip.) Stem grooved, smooth; leaflets 

 ovate or oblong, obtuse, cut-toothed, somewhat shining above. — Fields, &c. 

 July. (Adv. from Eu.) 



9. ARCHEMORA, DC. Cowbane. 



Calyx 5-toothed. Fruit with a broad single-winged margin, oval, flattish; 

 the carpels with 5 obtuse and approximated equidistant ribs on the convex back : 

 oil-tubes one in each interval, and 4 - 6 on the inner face. — Smooth perennials, 

 with rather rigid leaves of 3 - 9 lanceolate or linear leaflets. Involucre nearly 

 none : involucels of numerous small leaflets. Flowers white. (Name applied 

 to this poisonous umbelliferous plant in fanciful allusion to Archemorus, who is 

 said to have died from eating parsley. DC.) 



1. A. rigida, DC. Leaves simply pinnate; leaflets 3-9, varying from 

 lanceolate to ovate-oblong, entire or remotely toothed, or, in Var. ambigua, 

 linear, long and narrow. — Sandy swamps, New Jersey and W. New York to 

 Michigan, Illinois, and southward. Aug. — Stem 2° - 5° high. 



10. TIEDEMANNIA, DC. False Water-Dropwort. 



Calyx 5-toothed. Fruit with a single-winged margin, obovate, flattish ; the 

 carpels with 5 equidistant slender ribs on the convex back : oil-tubes one in each 

 interval, and 2 on the inner face. — A smooth and erect aquatic herb, wirii a 

 hollow stem (2° -6° high), and cylindrical pointed and hollow petioles (the 

 cavity divided by cross partitions) in place of leaves. Involucre and involucels 

 of few subulate leaflets. Flowers white. (Dedicated to the distinguished anat- 

 omist the late Prof. Tiedemann, of Heidelberg. ) 



1. T. teretifblia, DC. Virginia (Harper's Ferry) and southward. Aug. 



11. ANGELICA, L. Angelica. 



Calyx-teeth obsolete. Fruit flattened, with a double-winged margin at the 

 commissure ; i. e. the lateral rib of each oval carpel expanded into a wing; their 

 flattish backs each strongly 3-ribbed : an oil-tube in each interval, and 2 - 4 on 

 the inner face. Seed adherent to the pericarp. — Stout perennial herbs, more 

 or less aromatic, with first ternately, then once or twice pinnately or ternately 

 divided leaves, toothed and cut ovate or oblong leaflets, large terminal umbels, 

 scanty or no involucre, and small many-leaved involucels. Flowers white or 

 greenish. Petioles membranaceous at the base. (Named angelic from its cor- 

 dial and medicinal properties.) 



1. A. Curtisii, Buckley. Nearly glabrous; leaves twice ternate or the 

 divisions quinate ; leaflets thin, ovate or ovate-lanceolate, pointed, sharply cut 

 and toothed ; involucels of small subulate leaflets ; wings of the fruit broad. — 

 Mountains of Pennsylvania (Prof. Porter), Virginia, and southward in the Alle- 

 ghanies. Aug. 



