194 
IOWA ACADEMY OF SCIENCES. 
P. aristata Mx. Ringgold, Montgomery, and Pottawattamie 
counties. Wayside and waste places; frequent. 
Nyctaginace^. 
Oxyhaplius nyctagineus Sweet. Union county. Waste places; 
frequent. 
0. hirsutus Sweet. Taylor county. Waysides; infrequent. 
0. angustifolius Sweet. Page, Taylor, and Fremont counties. 
Prairies; infrequent. 
O. albidus Choisy. Union county. Waysides; infrequent; 
the same as Allionia albida Walt. 
Illecebrace^. 
Anychia capilalcea DC. Ringgold, Page, Fremont, and Pot- 
tawattamie counties. Woods; frequent. 
Amarantace^. 
Amarantus retrojiexus L. Page and Fremont counties. 
Waste places; common. 
A. albus L. Page county. Waste places. 
A. blitoides Watson. Fremont county. Waste places. 
Chenopodiace^. 
Glienopodium liybridum L. Ringgold and Fremont counties. 
Waste places; frequent. 
Gijcloloma platypliyllum Moq. Fremont county. Sandy soil ; 
frequent. 
Atriplex patulum liastatum Gray. Taylor county. Waste 
places ; infrequent. 
POLYGONACE^. 
Rumex crispus L. Clarke county. Waste places; frequent. 
R. acetosella L. Pottawattamie county. Waste places; fre- 
quent. 
Polygonum virginianum L. Ringgold and Page counties. 
Rich woods; common. 
P. aviculare L. Ringgold, Fremont, and Pottawattamie 
counties. Waste places; common. 
P. erectum L. Clarke and Union counties. Waste places; 
common. 
P. convolvulus L. Decatur county. Waste places; fre- 
quent. 
P. mulilenbergii Watson. Ringgold and Fremont counties. 
Wet places; frequent. 
