latifolia. 
major. 
oltusa» 
hastata, 
gracilis. 
heterophylla. 
pbL'rAKDRiA POLYGtNiA. SagUtatia. 
% . July, Aug. V. V. Leaves not above two inches 
long 5 flowers, as in all the following species, white. 
2. S. foliis ovatis acutiusculis sagittatis, lobis ovatis tenuis- 
sime acuminatis rectis, scapo simplici, fioribus monoi- 
cis, bracteis subrotundis obtusis. — IVilld. sp. pi. 4. 
p. 40Q. 
S. sagittifolia. Mich.Ji. amer. 2. p. I89. 
S. foliis amplis abrupte acutis, scapo subramoso, floribus 
dioicis. 
In ponds and ditches : Canada to Carolina. 1/ . June — 
Aug. V. V. Leaves large and broad. 
3. S. foliis dilatato-ovatis rotundato-obtusis mucronatis sa- 
gittatis, lobis approximatis oblongis oblique-acumina- 
tis rectis, scapo simplici, floribus dioicis, bracteis ova- 
tis acutis. — IVilld. sp.pl. 4. p.40g. 
In ditches and shallow ponds : Pensylvania to Virginia. 
1/. June — Sept, v, v. leaves the size of Callapa- 
lustris. 
4. S. foliis oblongo-lanceolatis sensim-acutis sagittatis, lobis 
patentibus lanceolatis longissime acuminatis, scapo 
simplici, floribus dioicis, bracteis calycibusque sub- 
rotundis obtusis. 
In old ditches: Pensylvania. %. July, Aug. v.v. 
Leaves the size of S. sagittifolia j the lobes very 
spreading. 
5. S. foliis linearibns obtusiusculis 3-nervibus sagittatis, 
lobis patentibus linearibus elongatis sensim tenuissime 
acuminatis, scapo simplici paucifloro, floribus dioicis, 
bracteis brevibus suborbiculatis. 
In bogs and ditches : Pensylvania to Virginia, particu- 
larly on the mountains. “}/ . July, Aug. v. v. Leaves 
very slender, about three inches long, measured from 
the beginning of the petiole. 
6. S. foliis simplicibus linearibus lanceolatisque utrinque 
acutis, sen ellipticis acutis basi obtusis sagittatis, lobis 
divaricatis linearibus, scapo simplici paucifloro, flori- 
bus monoicis, femineis subsessilibus, bracteis lato- 
ovatis acuminatis. 
In small ponds and ditches ; Pensylvania and New Jer- 
sey. . June — Aug. v. v. Leaves about two inches 
and a half long : this species is easily distinguished 
by the female flowers being almost sessile. 
