622 



UMBELL1FERAE (f'AKSLKY FAMILY) 



840. O. rijsridior 

 x 4. 



1. 0. filif6rmis (Walt.) Britton. Stem hollow, 4-'JO din. 

 high ; leaves reduced to cylindrical hollow pointed iiodnw 

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

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

 Am:.. Sept. 



\"ar. 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. (Tiedfnum- 

 nia rigida Coult. & Rose.) Swamps, N. Y. to Minn., si to the 

 Gulf. Aug. Poisonous; roots tuberiferous. Var. A.MISH.IA 

 (Nutt.) Robinson (Var. longifolia Britton) 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 ours) linear-seta- 

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

 tielinum, from its resemblance to these genera.) 



1. C. chine'nse (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. 

 Aug. -Oct. FIG. 841. 



44. ANGELICA L. ANGKLICA 



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. 

 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 -Severn / in tli<- in/<-rrnh ; ni>i>i-rin<>*t 

 leaves mostly reduced to large inflated petioles. 



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

 quinate ; Jcfijli-lx thin, ovate-lanceolate, xhnr/thi <m<l irrr<jnl<irhj 

 toothed, 2.5-8 cm. broad ; fruit ^labrous. :l-'.> mm. broad ; oil- 

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

 Alleghenies from Pa. to N. C. Aug. 



2. A. villbsa (Walt.) HSP. Puln-itcrnt <tf>nr ( > ; leaves twice 

 pinnately or ternately divided ; /ct/fJi /.s tlii'-kixh. lanceolate to 

 oblong. l-'J cm. broad, s<'rr<if<' ; fruit jmoi-.^i-i nf. I mm. broad; 

 uil-tube8 3-6 in the intervals. '(.-I. hh-stita Muhl.) Rocky 

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



:!. A. SYI.VKSTKIS L. ruberulent aliovc ; leaves ternately bi- 

 pinnate ; leaflet* thin, ornti- to l<nn-i<>l<ttt', fun In m-rrnte ; fruit 

 ijliihrmix. ."> r> mm. Ion--, :', mm. broad; oil-tubes mostly 1 in each 

 interval. Old fields, Louisburg, ("ape Breton I. (jUacoim}. 

 Nat. fr.'in KM. 



** Seed loose; i/-t>i/>s hnh-n,iit< -J-. ::<> H^HT petioles not 



m. A.a.ropur- SO pmmi in nt . 



pureaxS. 4. A. atropurpurea L. V r ei y stout, .^laln-ous throughout, 



