THE FLOR \ OF SCOTT AND MUSCATINE COUNTIES. 251 



669. C. Botrys, I,. Jerusalem Oak. Feather Geranium. 



Banks of Cedar River; waste places in Davenport and Mus- 

 catine. 



670. C ambrosioides, L. Mexican Tea. 



Waste places near habitations in Davenport and Muscatine. 

 Atriplex, Tourn. 



671. A. patulum, I.., var. hastatutn, Gray. 

 Streets of Davenport and Eldridge. 



Salsola, L. 



672. S. Kali, L., var. tragus, DC. Russian Thistle. 

 Railroad tracks, Davenport and Muscatine ; becoming abund- 

 ant at the latter place. 



PHYTOLACCACEiE. 



Phytolacca, Tourn. 



673. P. decandra, L. Pokeweed. 

 Near dwellings ; infrequent. 



POLYGONACEiE 



Rumex, L. 



674. R. Britannica, L. Great Water Dock. 

 Wet places ; frequent. 



675. R. altissimus, Wood. Pale Dock. 

 Moist soil ; not uncommon. 



676. R. rerticillatus, L. Swamp Dock. 

 Margins of ponds along rivers ; infrequent. 



677. R. crispus, L. Curled Dock. 

 Waste places ; common. 



678. R. obtusifolius, L. . Bitter Dock. 

 Muscatine, Buffalo, Davenport. 



679. R. acetosella, L. 



Dry fields; common. Becoming a pest in meadows and 

 pastures. 



Polygonum, Tourn. Knotweed. 



680. P. aviculare, L. 



Yards and waste places ; common. 



681. P. erect urn, L. 



With the last ; common. 



