194 
rigidius. 
lineare. 
longifolium. 
pusillum. 
trifoliatum, 
marginatum. 
carolinensis. 
PENTANDRIA DIGYNIA. 
244, SIUM. Gen. pl. 
480. 
1. S. foliis pinnatis, foliolis lanceolatis integerrimis vel su- 
perne dentatis. Willd. sp. pl. 1 
In wet meadows: Peusylvania to 
, p. 1433. 
Virginia. 2. July, 
Aug. v.v. 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 linearibus polyphyllis, umbella breviter radiata. 
Mich. fl. amer. 1. p. 167. 
S. suave. Walt. fl. car. 115. 
In wet meadows and along ditches 
vania. Y. July. v. v. 
: Canada to Pensyl- 
3. S, foliis pinnatis, foliolis inferioribus longissimis falcato- 
lineari rariter dentatis, caule oligophyllo superne 
.. nudo, umbellis subgeminis nudiusculis. EE 
In ditches and bogs: New Jersey. f. Aug. v. v 
Very slender. 
244. b. SISON. Gen. pl. 481. 
1. S. foliis biternatim multipartitis, umbellulis 3—5-floris, 
seminibus scaberulis. Mich. fl. 
Daucus divaricatus, Walt. fl. car. 
In dry sandy fields: Carolina. © 
2. S. foliis omnibus trifoliatis, foliolis 
ovalibus 2~3-lobis, superioribus ovali-lanceolatis, um- — 1 
bella terminali solitaria pedunculata, 
rotundis, Mich, fl. amer. 1. p. 168. 
amer. 1. p. 168. 
iib 0 
.April May. v.$. 
dentatis, inferioribus 
> 
| seminibus sub- 
In Upper Carolina. Michaur. +. : 
3. S. foliis pinnatis, superioribus quinatis, foliolis omnibus 
sessilibus lanceolatis integerrimis albido-marginatis, 
involucro involucellisque nullis. Mich. fl. amer. 1. 
p.168 
V. V. 
In wet meadows : Virginia to Carolina. 2%. Joly, Aug. 
245. CENANTHE. Gen. pl.484. - 
1. O. foliis omnibus simplicibus fili 
car. 113. 
South Carolina. Walter. +. 
formibus. Walt, ft 
