130 
IOWA ACADEMY OP SCIENCES. 
G. hybridum L. 
Missouri Valley, Turin, Onawa (L H, P.); Sioux City (B. 
W.), a common weed in waste places. 
jSalsola Kali L. , var. tragus Moq. 
Onawa, Sioux City, Missouri Valley, Hawarden, Council 
Bluffs (L. H.P.), spreading rapidly. 
POLYGONACEAE. 
Bumex verticillatus L. 
Missouri Valley, in swamps, common (L. H. P.). 
R. crispus L. 
Council Bluffs, weed in streets (L, H. P. observations). 
R. maritimum L 
Sioux City (B. W.); Little Rock (C. R. Ball), in low 
grounds. 
R. Acetosella L. 
Missouri Valley, Turin, weedy in yards and fields (L. H, P.). 
Polygonum aviculare L. 
Sioux City (B. W.); Hawarden, weed in yards (L. H. P.); 
Missouri Valley. 
P. erectum L. 
Missouri Valley, common weed in streets (L. H. P). 
P. ramosissimum Michx. 
Missouri Valley, Sioux City, L. H. P., B. W.) Hawarden 
(L. H. P.). 
P. lapatJiifolium L., var. incarnatum Watson. 
Sioux City, (B. W.); Turin, low grounds (L. H. P.). 
P. Pennsylvanicum L. 
Logan, Turin, Onawa, Missouri Valley, low grounds, (L. 
H. P.); Hull (N. Newell). 
P. Mulilenbergii Watson. 
Sioux City (B. W.), common along the Missouri river 
(L. H. P.). 
P. Persicaria L. 
Hull (W. Newell); Sioux City (B. W.). 
P. orientale L. 
Missouri Valley, an escape from cultivation (L. H. P.). 
P. acre HBK. 
Hull (W. Newell). 
P. Virginianum L. 
Sioux City (B. W ). 
P. Convolvulus L. 
Sioux City (B. W.), Hull (W. Newell). 
