m 



PZNTANDRIA DIGYNIA. 



rigidius, 



lineare. 



longifolium. 



pusillum. 

 tnfoliatum. 



marginatum. 



carolinensis. 



244. SIUM. Gen. pi. 480. 



1. S. folii5 pinnatis, folinlis lanceolatis integerrimis vel su- 



perne dentajs. TF'iUd. sp. pi. 1, p. 1433. 

 In wet meadows : Pensylvania to Virginia. 2{. . July, 

 Aug. v.r Flowers small. This and the following 

 are considered very poisonous plants, especially in re- 

 spect to horned cattle ; and every farmer who knows 

 their bad qualities is busily employed to destroy them, 



2. S. foliis pinnatis, foliolis longis sublanceolato-linearibus 



remotiuscule serratis, involucro oligophyilo, involu- 

 cellis lincaribus polyphyllis, umbella breviter radiata. 

 Mich. Jl. amer. I. p. 167. 



S. suave. IValt. Jl. car. \\5. 



In wet meadows and along ditches : Canada to Pensyl- 

 vania. %. .July. V. V. 



3. S. foliis pinnatis, foliolis inferioribus longissimis falcato- 



linearibus rariter dentatis, caule oligophyilo superne 

 nudo, umbellis subgeminis nudiusculis. 

 In ditches and bogs : New Jersey. 1/ . Aug, v. v. 

 Very slender. 



244. I. SISON, Gen.pl. 481, 



1. S, foliis biternatim multipartitis, urabellulis 3 — 5-floris, 



seminibus scaberulis. Mich.Jl. amer. 1. p. 168. 

 Daucus divaricalus, JValt. fl, car. 1 14. 

 In dry sandy fields : Carolina. 0, April, May, v. s. 



2. S. foliis omnibus trifoliatis, foliolis dentatis, inferioribus 



ovalibus 2-3-lobis, superioribus ovali-lanceolatis, um- 

 bella terminali solitaria pedunculata, seminibus sub- 

 rotundis. Mich. Jl. amer. 1. p. 168. 

 In Upper Carolina. Michaux. +. 



3. S, foliis pinnatis, superioribus quinatis, foliolis omnibus 



sessilibus lanceolatis integerrimis albido-marginatis, 

 involucro involucellisque nullis, Mich. Jl. amer. 1 . 

 p. 168. 

 In wet meadows : Virginia to Carolina. % . July, Aug. 



V. V. 



245. GENANTHE. Gen. pi. 4S4. 



1. O. foliis omnibus simplicibus filiformibus. 

 car. 113. 

 South Carolina. JFalter. -f. 



JValt. Jl. 



