UMBELLIFER,E. 135 



Near cultivated grounds. Mass, and N. Y. July, Aug. (J). Stem about 2 

 feet high, branched, hollow, not spotted. Leaves with the ultimate divisions 

 linear-lanceolate. Umbels on long peduncles, terminal and opposite the leaves. 

 It has a nauseous odor and is said to be poisonous. Common Fool's Parsley. 



13. CONIOSELINUM. D. C Conioselinum. 

 - (Name compounded of Conium and SeUnum.) 



Calyx with the margin obsolete. Petals obcordate or obo- 

 vate, with an inflexed point. Fruit convex or compressed on 

 the back. Carpels with 5 winged ribs ; the lateral ones twice 

 as broad as the others and marginal. General involucre none, 

 or few-leaved ; partial one of 5 6 subulate leaves. 



C. Canadense Terr. <$ Gr. : fruit oval, nearly twice the length of the 

 pedicels ; dorsal ridges narrowly winged. Selinum Canadense Mich. 

 Cnidium Canadense Spreng. 



Swamps. Can. N. Y. and Ver. July, Aug. 7L Stem 35 feet high, 



t _ -_l _ ... *"_ T _ _ '^1 _/!_*.- 1 _1- _ ^t ^' l n ,1 P^ 



branching above, striate. Leaves with inflated sheathing petioles, 3-parted ; the 

 divisions pinnately compound ; segments pinnatifid, long. Umbels of 1016 

 slender rays. Flowers white. Closely resembles C. Fisheri. 



Canadian Conioselinum. 



14. THASPITJM. A^.-Thaspium. 

 (From the Isle of Thaspia ; a name unfortunately applied.) 



Calyx with the margin 5 -toothed. Petals elliptic, attenuated 

 into a long inflexed point. Fruit not contracted at the side, 

 subelliptic. Carpels convex, with 5 winged ribs ; wings sub- 

 equal ; intervals grooved. General involucre none ; partial 

 one about 3 -leaved. 



* Umbels opposite. Flowers dark purple. 



1. T. atropurpureum Null.: stem smooth, dichotomously branched; 

 radical leaves subcordate, simple, serrate ; cauline ones ternate, serrate ; 

 leafets ovate-oblong. Cnidium atropurpureum Spreng. 



Moist grounds. N. Y. N. J. and Penn. June. 1\..Stem about 2 feet high, 

 smooth. Flowers dark purple. Fruit small, with membranaceous wings. 



Purple Alexanders. 



** Umbels terminal. Flowers yellow. 



2. T. actcdfolium Nutt.: stem very tall, smooth and straight; lower 

 leaves tri-ternate ; upper ones bi-ternate ; leafets oval, coarsely toothed ; 

 umbels numerous, terminal, somewhat whorled; partial involucre seta- 

 ceous. Ligusilcum actesifolium, Mich. Torr. fy Gr. 



Banks of streams. Can. to Geor. W. to Ken. July. 1\-. Stem 35 feet 

 high. Fruit ovate-oblong, with the ribs somewhat winged. Tall Thaspium. 



3. T. barbinode Nutt. : petioles and nodes of the stem pubescent; lower 

 leaves tri-ternate ; upper ones bi-ternate ; segments cuneate-ovate, acute, 

 unequally and incisely serrate, entire at the base ; partial involucre 3-leaved, 

 setaceous. Li^usiictrm htrrbiiiorl;' Mich. Thi^'a ////./ n'a Sprenff. 



