DR. HOOKER ON THE DISTRIBUTION OF ARCTIC PLANTS. 
301 
DICOTYLEDONES 
Betulaceae (continued). 
Alntts viridis, DC. (alp.) , 
fruticosa, Rich. 
repens, VaJil. 
incana, Willd 
LVI. Cupuliferas. 
Corylus Avellana, L 
LVII. SalicinesB. 
Salix pentandra, L. 
lueida, Willd. 
lanata, L. (alp.) 
Richardsoni, Hook. 
Barattiana, Hook. 
speciosa, H. Sf A. (alp.) 
Lapponum, L. (alp.) . . 
Stuartiana, Sm. 
Caprea, L 
nigricans, Ft 
punctata, Walil. 
phylieifolia, 8m. (alp.) 
myrtilloides, L 
hastata, L. 
cordata, Muhl 
pedicellaris, Pursh. 
rhamnifolia, H. $ A. 
ovalifolia, Trautv. 
glacialis, And, 
Arbuscula, L. (alp.) 
glauea, L. (alp.) 
desertorum, Rich. 
villosa, Don. 
arctica, Br. (alp.) 
alpestris, And. . . . 
cordifolia, Pursh (partim). 
pyrenaica, Gouan (partim). 
myrsinites, L. (alp.) 
phlebophylla, And 
reticulata, L. (alp.) . 
vestita, Pursh. 
nivalis, Hook. 
herbacea, L. (alp.) 
polaris, L. (alp.) 
Popuxtjs tremula, L 
tremuloides, Mich 
balsamifera, L... . 
LYIII. Conifer*. 
Pints sylvestris, L. . 
Banksiana, Lamb. 
Cembra, L. (alp.) 
Abies alba, L 
Picea nigra, L 
excelsa, DO. 
onentalis, L 
Lasix Ledebourii, Endl. 
Sibirica, Led. 
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