CATALOGUE OF PLANTS. 61 



Silver Lake; Bostwick Lake; Little Bostwick Lake. Abundant 

 at these stations. It grows sparingly on the bluffs along the 

 Upper River Road. 



POLYGONUM L. Kxotwked. 



490. P. acre HBK. Water Smartweed. 

 P. punctatuin Ell. 

 Wet places; frequent. Aug.-Sept. 



49L P. amphibium L. 



In shallow water; frequent and variable. June-Aug. 



492. P. aviculare L. Knot-grass. Door-weed. 

 Common. Aug. -Oct. 



493. P. cilinode Michx. 

 Copses; frequent. July-Sept. 



494. P. CoNvoT.vuLus L. Black Bindweed. 

 Common in waste or cultivated ground. July-Oct. 



495. P. erectum L. 



Common. Aug.-Sept. 



496. P. Hartwrightii Gray. 



In wet soil; infrequent. Aug.-Sept. 



Wood Lake; Crooked Lake; G. R. & I. Ry., south of Burton 



Ave.; Miller's Lake. 



497. P. Hydropiper L. Common Smartweed or Water-Pepper. 

 Low ground; common. Aug.-Sept. 



498. P. hydropiperoides Michx. Mild Water-Pepper. 

 Low places; common. Aug.-Sept. 



499. P. incarnatum Ell. (P. lapathifolium incarnatum Wation.) 

 In wet soil. Aug.-Sept. 



Grand River at Grand Island (O.H.); Plainfield Village; Miller's 

 Lake. 



500. P. lapathifolium L. 



Frequent along river banks. July-Sept. 



