36 



PlCRIS ECHIOIDES, L. 



"Along the road side between Clifton and Niagara Falls." Macoun. 

 Lampsana communis, L. 



Queenston Heights, Ontario. Macoun, on the authority of Millman. 

 Hieracium aurantiacum, L Hawkweed 



Groat Island. Introduced. 



Hieracium Canadense, Michx Canadian Hawkweed 



Near DeVaux College. 

 Hieracium paniculatum, L Hawkweed 



With the last. 

 Hieracium venosum, L Hawkweed 



Goat Island. 



Hieracium scabrum, Michx Hawkweed 



Near DeVaux College. 

 Hieracium Gronovii, L Hawkweed 



Goat Island. Near Clifton, Ontario. 

 Prenanthes alba, L. (Nabalus albus, Hook.) White Lettuce 



Groat Island. 



Prenanthes altissima, L. (Nabalus altissimus, Hook.) 

 Lewiston. Foster's Flat, Ontario. 



Taraxacum officinale, Web * Dandelion 



Goat Island and elsewhere. 



Lactuca Canadensis, L Wild Lettuce 



Goat Island. 



Lactuca integrifolia, Bigelow. (L. Canadensis L., var. integrifolia, 

 Torr. and Gray.) 



Goat Island. Near Clifton, Ontario. 



Lactuca ieucophsea, Gray. (Mulgedium leucophceum, DC.) Blue 

 Lettuce. 



Goat Island. 



SONCHUS OLERACEUS, L Sow THISTLE 



Goat Island. 



LOBELIACE^L 

 Lobelia syphilitica, L Blue Lobelia 



On the American side of the river above the Falls. 



Lobelia Kalmii, L Kalm's Lobelia 



Goat Island. Low grounds near Clifton, Ontario. 



Lobelia inflata, L Indian Tobacco 



Lewiston and elsewhere. 



