15 



Arabis Drummondii, Gray. 



Lewiston. Not common. 

 Bahi:aki:\ 11; ecox, R. Br Early Winter Cress. 



Brock's monument, Ontario. Macoun. 

 Barbarea vulgaris, R. Br Winter Cress 



Road sides near the falls. 



Erysimum cheiranthoid.es, L Worm-seed Mustard 



Margin of the river above the Falls. 



Sysimbrium officinale, Scop Hedge Mustard. 



Road sides and waste places near the Falls. 

 Brassica Sinapisastrum, Boiss Mustard. Charlock. 



Abundant on both sides of the river. 

 Brassica nigra, Koch Black Mustard. 



Between the Falls and DeVaux College. 

 Nasturtium officinale, R. Br Water Cress. 



Near the river's edge above the Falls. Clifton, Ontario. 



Nasturtium palustre, DC Marsh Cress 



In damp places above the Falls. 



Nasturtium lacustre, Gray Lake Cress 



In the river above the Falls. 



Nasturtium Armoracia, Fries Horse Radish 



"At Niagara Falls." Macoun. 

 Capsella Bursa-pastoris, Moench Shepherd's Purse 



Common everywhere. 



Lepidium Virginicum, L Wild Peppergrass 



Road sides, near the village. 



Lepidium campestre, R. Br Field Peppergrass 



"Clifton, near Niagara Falls." Macoun. 



CAPPARIDACE^]. 

 Polanisia graveolens, Raf. 



" Abundant on the sands at Niagara." Macoun. 

 Plentiful at the foot of Lake Erie. 



CISTACE^. 



Helianthemuin Canadense, Michx Frost Weed 



Common in dry places in Western New York, no doubt occurring 

 near DeVaux College, and at Lewiston. 



Lechea major, Michx Pinweed 



Probably? occurs with the last. 



