376 Statistics of the Flora of the Northern States. 
If the high northern prostrate Savin is rightly referred to 
Juniperus Virginiana, this species extends from within the 
Arctic Circle to the Gulf of Mexico, It is the only woody plant 
which does so, except perhaps Amelanchier, which has been traced 
almost to the Arctic Circle, and possibly Prunus Virginiana 
Alnus viridis occurs southward only on the highest Alleghanies. 
We naturally enquire whether these fifteen species range wide- 
ly east and west. Seven of them, those to which an asterisk is 
southern range to Georgia) is wholly eastern, and is also Euro- 
an. Populus tremuloides and Abies nigra are both exclusively 
tern North American in habitation. 
The following 68 species of woody plants, range with us 
through between 20 and 29 degrees of latitude. 
— »* Tilia Americana. t Vaccinum uliginosum. 
+ Rhus glabra, t : Canadense. 
— >. “ - aromatica. { Arctostaphylos alpina. 
— * Vitis cordifolia. — f Epigza repens. 
— + Ampelopsis quinquefolia. ft? Cassiope hypnoides. 
— f¢ Acer rubrum. 
— + Negundo aceroides. — 
— #* Amorpha fruticosa. Phyllodoce taxifolia. 
{ Andromeda polifolia. 
t . 
t 
— * Prunus Americana. t Kalmia glauca. 
t 
t 
t 
“ igustrina. 
— *# Spirea opulifolia. Menziesia ferruginea. 
“  salicifolia. Rhododendron Lapponicum. 
+ Rubus occidentalis. Loiseleuria procumbens. 
~— “ — villosus. — + Fraxinus Americana. 
{ Potentilla fruticosa. { Shepherdia Canadensis. 
— * Pyrus arbutifolia. { Empetrum nigrum. 
¢ Ribes Cynosbati. — + Ulmus fulva. 
+ “© hirtellum. — “ — Americana. 
[~*~ Jacustre. — # Quercus obtusiloba. 
+. © Yabram. — + «alba. 
{ Lonicera exrulea. — ft «_rubra. 
+ Sambucus pubens. — * Fagus ferruginea. 
ae 3 “ Canadensis. — + Corylus Americana. 
{ Viburnum Opulus. — + Ostrya Virginica. 
+ Gaylussacia resinosa, J Myrica Gale. 
-} Vaccinium Vitis Idea. + Comptonia 
t = us, ¢ Betula pumila. 
