288 POPULAR FIELD BOTANY. 
with short stalks, oval, sharp-pointed, and deeply cut at the 
edges ; flowers larger than the last species. 
Eprtospium terraconum. Sguare-stalked Wellow-herb. 
Leaves long and narrow, no stalks, toothed. Stem with 
four angles. Common in watery places. 
Eprtopium patustre. Narrow-leaved Marsh Willow- 
herb. Boggy places, and the sides of lakes and ditches. 
About a foot high, flowers small, leaves narrow, and long, 
no stalks, scarcely cut at the edge, and, as well as the stem, 
nearly smooth. 
OcTANDRIA. 'TRIGYNIA. 
MoNOCHLAMYDE®. POLYGONACEZ. 
POLYGONUM.  (Prrsicary.) 
Generic Character. See page 217. 
Potyconum Facoryrum. Buck-wheat. This species is 
often cultivated for its seeds, with which poultry and 
pheasants are fed; but it is occasionally found wild on culti- 
vated land. It is an exceedingly pretty plant ; stem nearly 
erect, about a foot high, and branched. Leaves heart- 
shaped. Flowers pale red, in spreading bunches, and yielding 
vy 
