165 
0, grandiflora Ait. 
1/ 
0. perennis L. = 0. pumila. 
X, 57k/? 4c 
0, fruticosa L. = 0. linearis. 
0. hybrida Michx. - 0, fruticosa, var. hirsuta. 
0, hybrida, var. ambi;?ua (Nutt.) Blake. 
fruticosa of Man. 
= 0 . 
0. longipedicellata (Small) Robinson 
0. pratensis (Small) Robinson 
Circaea latifolia Hill = C. lutetiana of Man. 
/•'i. 
C. canadensis Hill = C. intermedia. 
C. alpina ^ ^ 
hui ^,-i^ n^). 
haloragibacsae 
Myriophyllum alterniflorum DC, 
