622 



UMBELLIFERAE (PARSLEY FAMILY) 



840. O. rigidior 

 X4. 



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

 high ; leaves reduced to cylindrical hollow pointed nodose 

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

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

 Aug., Sept. 



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

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



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

 dm. high ; leaves simply pinnate, with 3-9 linear to lanceolate 

 remotely toothed leaflets ; oil-tubes mostly small. ( Tiedeman- 

 nia rigida Coult. & Rose.) Swainps, N. Y. to Minn., s. to the 

 Gulf. Aug. Poisonous ; roots tuberiferous. Var. AMB{ GUA 

 (Nutt.) Robinson (Var. longifolia Britton) with entire leaflets, 

 occurs in N. J., and south w. FIG. 840. 



43. CONIOSELlNUM 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 ours) linear-seta- 

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

 Selinum, from its resemblance to these genera.) 



1. C. chinSnse (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 Ont., s. to N. E., N. Y., Ind., Minn., and in the mts. to N. C. 

 Aug. -Oct. FIG. 841. 



44. ANGELICA L. ANGELICA 



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 841. C. chinense 

 or indefinite, 2-10 on the commissure. Stout perennials, with x 4. 



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-tubes 1-several in the intervals ; uppermost 

 leaves mostly reduced to large inflated petioles. 



1. A. Curtfsii Buckley. Glabrous; leaves twice tern ate or the divisions 

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

 toothed, 2.6-^8 cm. broad ; fruit glabrous, 3-'. mm. broad ; oil- 

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

 Alleghenies from Pa. to N. C. Aug. 



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

 pinnately or ternately divided ; leaflets thickish, lanceolate to 

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

 oil-tubes 3-6 in the intervals. (A hirsuta Muhl.) Rocky 

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



3. A. STI.VESTRIS L. Puberulent above ; leaves ternately bi- 

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

 glabrous, 5-6 mm. long, 3 mm. broad ; oil-tubes mostly 1 in each 

 interval. Old fields, Louisburg, Cape Breton I. (Jtfocown). 

 (Nat. from Eu.) 



* * Seed loose ; oil-tubes indefinite (25-30) ; upper petioles not 

 842. A. atropnr- 80 prominent. 



pureaxs. 4. A. atropurpurea L. Very stout, glabrous throughout, 



