31 
A. canina L 
A. can., var. mutica Uaudin 
A. borealis iiartra 
A. bor*, var, macrantha JDames. 
^. 1 ,, 5-|rv ifc— 
C, Pick., var. debilis (ii-eamey} Fernald & 
W,’.., 'fS, 'T^d4\ ' fidnfyykho-^'t U,^, 
C, Pick., var. lacnstris (Kearney) Hitchc. 
C. perplexa Scribn. 
C. canadensis ( Michx. ) ^Beanv. 
C. can., var. acuminata Vasey. 
C. Langsdorfii (Link) Trin. 
C. ^eglecta (Ehrh.) G., M.&S. 
ll 
