Statistics of the Flora of the Northern States. 215 
I must not stop here to compare our flora with that of Europe 
as respects the proportions of the predominant families. The 
data on our part for such comparison are recorded above. I 
ass on to notice some charucteristic features which depend upon 
positive differences in the families. 
fornia, and Galacinew, of one genus and species,—a genus incerte 
sedis, rather than an order. 
Our orders peculiar to America are the following :— 
Sarraceniaces, Cactaces, ydrophyllacee, 
Limnanthacex, Galacinez, Bromeliacese ; 
Loasaceze 
? 
all of which, except Galacinee and perhaps Bromeliacee, are also 
represented on the western side of our continent. Besides these 
China, and the 
Extra-European Orders not peculiar to America. 
“xtra-European Orders of the p in Western Pp pe » China, 
Flora of the Northern States N. America. or Himalayas, 
Magnoliacez. |Magnoliacez. 
Anonacee. nona: 
Menispermacee. |Menispermacee. 
Nelumbiacee. \Nelumbiacez. 
Cabombacee. , 
Calycanthacee. Calycanthacese 
Melastomacese. - Melastomaceze 
Passifloraceze. Passifloraceee. 
Hamamelace Hamamelacee. 
apotaces. Sapotacee. 
signoniace. \Bignoniacee (Martynia) ?/Bignoniacee. 
Nyctaginacee. |N yctayinacee. Nyctaginacese? 
Phytolaccacee. Phytolaccaceee. Phytolaccacee. 
aururacee. Saururacez. Saururacee. 
Podostemacee. Podostemacee. 
Burmanniacer. * |Burmanniacee. 
Hemodoracee. 
Commelynacee. \Commelynacez. 
Xyridacew. Xyridacez. 
