UMBELLIFER^. 



135 



Near cultivated grounds. Mass. and N. Y. July, Aug. (]).-— 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 FooVs Parsley. 



13. CONIOSELINUM. D. C— Conioselinum. 

 (Name compounded of Conium and Selinum.) 



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 Torr. d^ 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. %.—Stem 3—5 feet high, 

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

 divisions pinnately compound ; segments pinnatifid, long. Umbels of 10 — 16 

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



Canadian Conioselinum. 



14. THASPIUM. iVvi^.— 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 Nuit. : 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. 94- — ^^^^ about 2 feet high, 

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



Purple Alexanders. 



** Umbels terviinal. Flowers yellow. 



2. T. actcBifolium 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. Ligusticum actcsifolium Mich. Torr. d^ Gr. 



Banks of streams. Can. to Geor. W. to Ken. July. %.—Stem 3—5 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. Ligusticum barbinode Mich. Thapsia trifoliata Spreng. 



