an) eo 
Statistics of the Flora of the Northern States. 83 
Ulmus U. montana. 
Celtis seticelaiik C. australis. 
orus r M. nigra, 
_Urtica grac cili is, U. dioica. 
‘Parietaria Pennsylvanica, P. officinalis. 
Platanus cca P. orientalis. 
s Ameri C. Avellana. 
Chipicns this C. Betulus 
a Virginiea, O. vulgaris 
Alnus serrulata, A. glutinosa 
Salix lucida, &e, S. pentandra, & 
Populus tremuloides, P. tremula 
Abi ea, A. pectinata 
“nigra and alba, exce 
Lari Americana, L. Europea 
Sagittaria variabilis, S, sagittifolia. 
Cypripedium pubescens, C, Calceolus 
Smilax eager _ ¥ S. aspera, 
Polygonatam biflor P. multiflorum, 
gigan htt eum fficinale. 
ib yilicaruh Americanum and albidum, bE. dens-canis, 
I omit, for the most part, the large genera, in which it becomes 
a nice question rightly to pair off representative species. 
Th all these lists it’ is sometimes the case that the species or 
forms of the second column also are indigenous to the United 
States, on to North America. 
now our about 115 closely representative species (of 
the descr and third lists) to the 320 identical ones, we have a 
total of 485, or over one-fifth of our Phzenogamous as 
the same as, or very much like European plants; an sh 
more of good Sra forms might ected 
ep eet &ec.) to stan the 
that of northern pap hecer 7 nae ‘llnetrated in 
very lange ria of the soem att and po pops 
Well-known European genera are represe here ;— 
indigenous, at least in naturalized plants, acstrt the common ob- 
Server never thinks of eliminating. Illustrations of so familiar 
a are superfluous. 
