48 



EUPHORBIACE^. 



Euphorbia maculata, L Spotted Spurge 



Main land on both sides of the River. 



Euphorbia platyphylla, L Spurge 



Road sides on the main land. 



Euphorbia Helioscopia, L Spurge 



With the last. 

 Euphorbia Cyparissias, L Cypress Spurge 



Escaped. 



Euphorbia hypericifolia, L Spurge 



Above the Falls on the American side. 



Acalypha Virginica, L Three-seeded Mercury 



Near DeVaux College. 



CERATOPHYLLACE.E. 



Ceratophyllum denier sum, L Horn wort 



In shallow places in the River above the Falls on the American 

 side. In pools near Clifton, Ontario. 



URTICACE^L 



Ulmus fulva, Michx Slippery Elm 



Goat Island. Lewiston. 



Ulmus Americana, L American Elm 



Goat Island. 



Ulmus racemosa, Thomas Thomas's Elm 



Bath Island. Planted. 



Ulmus campestris, L English Elm, 



Luna Island. Planted. 



Celtis occidentalis, L Nettle Tree. Sugar Berry 



"Rather common between Queenston and Niagara." Macoun. 



Morus rubra, L Red Mulberry 



Near DeVaux College. One small specimen observed near the 

 Ferry landing on the Canadian side. "Not uncommon from 

 Niagara Town along the river to the Whirlpool." Macoun. 



Morus alba, L White Mulberry 



Spontaneous near Lewiston. ' Niagara Falls. Macoun. 



Morus 



An undetermined species has been planted on Luna Island. 



