Collection of Arctic Plants. 379 
an elevation of 10,000 feet above the level of the ocean, near 
the limit of perpetual snow. The author however observes, 
that the species found there differs somewhat from ours, in 
having the flowers uniformly diandrous and the leaves not 
emarginate. 
25. PotyGonum. 
43. P. viviparum. 
This, like the last plant, is of common occurrence in the 
north of Europe, of Asia and America, particularly the arctic 
districts. In the alps of the south of Europe it also appears, 
but always growing at a great elevation above the level of 
the sea. 
Besides being common in Arctic America, itis found in La- 
brador and Canada ; and my friend Mr. Boott has gathered it 
upon the summit of the White Mountains. 
26. Konieta. 
44. K. Islandica. 
Found in Iceland (as its specific name implies) ; also in the 
Faroe Islands and Greenland; and, as far as my knowledge 
goes, no where else. 
AMENTACEÆ. 
27. SALIX. 
45. S. arctica. Br. 
First discovered in Baffin’s Bay, during Captain Ross's 
. voyage ; afterwards in Greenland, Melville Island, and Igloo- 
lik ; thus well deserving of the appellation which Mr. Brown 
has applied to it. 
3 D Cl. II. 
VOL. XIV. 
