622 



UMBELLIFEIIAE (rAKSLEV FAMILY) 



840. O. 



X 



rigidior 

 4. 



1. 0. filif6rmis (Walt.) Britton. Stem hollow, 4-20 dm. 

 high ; leaves reduced to cylindrical hollow pointed nodose 

 petioles; fruit ohovate, rounded or truncate at the ends. 

 ( Tiedemannia teretifolia DC.) — Ponds, Va. to Fla. and La. 

 Auu., Sept. 



Var. Canbyi Coult. & Rose. Fruit short, suborbicular, retuse 

 at both ends. — Ellendale, Del. (Canby^ Commons). 



2. 0. rigidior (L.) Coult. & Rose. (Cowbaxk.) Stem 6-15 

 dm. high; leaves simply pinnate, with 8-9 linear to lanceolate 

 remotely toothed leaflets; oil-tiibes mostly small. {Tiedeman- 

 nia rigida Coult. & Rose.) — Swamps, X. Y. to Minn,, s. to the 

 Gulf. Aug. — Poisonous; roots tuberiferoiLS. Var. ambigia 

 (Ntitt.) Robinson (Var. longifolia l^ritton) with entire leaflets, 

 occurs in X. J., and southw. Fig. 840. 



43. CONIOSELINUM Fisch. Hemlock Parsley 



Fruit oval, flattened dorsally, glabrous, the lateral ribs extended into broad 

 ■wings; seed slightly concave on the inner face. — Tall slender glabrous peren- 

 nials, with finely 2-3-pinnately compound leaves, few-leaved 

 involucre or none, involucels of elongated (in oL.rs) linear-vseta- 

 ceous bractlets, and white flowers. (Compound of Conium and 

 Selinum, from its resemblance to these genera.) 



I. C. chinense (L. ) BSP. Leaflets pinnatifid ; wings nearly 

 as broad as the seed ; oil-tubes 2-3 in the intervals, sometimes 1 

 or 4. (C canadense T. & G.) — Swamps and cold cliffs, Nfd. 

 to Out., s. to N. E., N. Y. , Ind., Minn., and in the mts. to N. C. 

 Fig. 84L 



Aug. -Oct. 



44. ANGELICA L. Angelica 



841. C. chinense 

 X4. 



Fruit strongly flattened dorsally ; primary ribs very prominent, 

 the lateral extended into broad distinct wings, forming a double- 

 winged margin to the fruit ; oil-tubes 1-several in the intervals 

 or indefinite, 2-10 on the commi.ssm'e. — Stout perennials, with 

 ternately or pinnately compound leaves, large terminal umbels, 

 scanty or no involucres, small many-leaved involucels, and white- or greenish 

 flowers. (Named angelic from its cordial and medicinal properties.) 



* Seed adherent to the pericarp ; oil-tuhes l-several in the intervals; uppermost 

 leaves mostly reduced to large injiated petioles. 



1. A. Curtisii Buckle3\ Glabrous ; leaves twice ternate or the divisions 

 quinate ; leaflets thin, ovate-lanceolate, sharply and irregularly 

 toothed, 2.6-8 cm. broad ; fruit glabrous, o-'.> mm. broad ; oil- 

 tubes mostly solitary (rarely 2-3) in the intervals. — Along the 

 Alleghenies from Pa. to N. C. Aug. 



2. A. vill5sa (Walt.) BSP. Pubescent above; leaves twice 

 pinnately or ternately divided ; leaflets thickish, lanceolate to 

 oblong, 1-2 cm. broad, serrate; fruit puhescent. 4 mm. broad ; 

 oil-tubes 3-6 in the intervals. (^1. hirsuta Muhl.) — Rocky 

 woods, w. Mass. to Minn., Tenn., and Fla. July. 



3. A. sYLVESTRis L. Puberuk'nt above ; leaves ternately bi- 

 pinnate ; leaflets thin, ovate to lanceolate, finely serrate ; fruit 

 glabrous, 5-6 mm. long, 3 mm. broad ; oil-tubes mostly I in each 

 interval. — Old fields, Louisburg, Cape Bret(Mi I. {Macoun). 

 (Nat. from Eu.) 



* * Seed loose ; oil-tubes indefinite (26-.30); tipper petioles not 

 842. A. atn.pur- «^ prominent. 



purea x 3. 4. A. atropuipurea L. Very stout, glabrous throughout, 



