$n FENTANDRIA. DIGYNIA. sium, 



Mutt. Gen. I. p. 186. excl. syn. Pursh. Roem, &? 



Schult. VI. p. 538. excl. syn. Pursh. S. tenuifoHum 



Muhl. Cat. p. 30. Me J^ut t. 



Root perennial. Ste7n 7-angled, ^vith intermediate grooves, 2—3 

 feet high, erect, smooth. Leaves simply pinnate ; leaflets 2—3 

 inches long, 2—4 lines broad, acute at each end, very sharply 

 serrate ; serratures nearly equal. Uinbels terminal, with ra- 

 ther short rays. Involucra 8 — 10-leaved ; leaflets linear- 

 lancenlate, acuminate, entu-e. Ca/t/x obsolete. Pe/a/s white, 

 inflexed. Styles lonij, d< flexed ; stigmas capitate. Fruit about 

 a line and a half long, ovate, with 5 prominent ridges. 

 Hab. In swamps. New-Durham, New-Jersey. Deerfields 

 Massachusetts. C o o le y and Nile h c oc k. August. 



This species, and the preceding, are probably only varie- 

 ties of eacn other, and both appear to be distinct from the 

 European Sium lati/olium, 



209. CONIUM. L. 



Fruit ovate, solid, with 5 obtuse ribs, crenulatc 

 when immature ; intervals flat. Umbels with universal 

 and partial involucra. Roem. ^ Schult. Gen. 

 1211. 



C. macvlatum L. : stem very smooth, spotted; leaves tri- 

 pinnate ; leaflets lanceolate, pinnatifid ; segments lanceolate, 

 nearly entire. Willd. Spec. I. p. 1 395. Smith Ft. Brit. 

 I. p. 302. Eng.Bot.i.\\'d\..PurshFl.\.^.\d5. Big. 

 Bost. p. 68. Ejusd. Med. Bot. I. p. 1 13. t 1 1. • Roem, 

 <$/• Schult, VI. p. 545. 



Boot biennial. Stem 2 — 4 feet high, erect, branched, a Tittle 

 sulcate. Leaves much divided, smooth and shining ; leaflets 

 ovate-lanceolate ; segments very acute. Umbel many-rayed, 

 Jnvolucrum lateral, of 2—3 short lanceolate leaves ; partial 

 setaceous. Calyx nearly obsolete. Petals white, cordatCj 

 with an inflexed point- Fruit ovate, smooth, with 5 elevated 

 unequal ribs. 



Had. On road-sides and among rubbish. July. Introduced, 



Hemlock,, 

 A very poisonovis plant. The leaves are fetid when bruised. 



210. LIGUSTICUM. L.—Sprengel- 



Fruit ovate oblong, with 5 acute ribs ; intervals sul- 

 cate. Universal and partial involucra various. Roe m^ 

 e:? Schult. Gen. 1212. 



1. L. scoticttm L.: leaves bitemate; leaflets snbrhom- 



