146 PHANEROGAMIC FLORA OF SPITZBERGEN. 
flower 14th July; Magdalena Bay (8-9 inches long), Augusti Bay, 
and Ice Sound, in fruit in the end of August and the beginning of 
September. 
ERICINEJE, Juss. 
61. Andromeda tetragona, L., Wbg., Hook., Fr. ; Cassiope tetragona, 
Don, De Cand., Ledeb.—On sand and gravel along the west, north, 
and east coasts, but scarce. At Lomme Bay, 300 feet above the sea ; 
Treurenburg Bay, in flower 4th July, and Wide Bay 12th July. 
EMPETREA, Nutt. 
62. Empetrum nigrum, L., Bellsund, Vahl, and Ch. Martins. 
PoLYGONES, Juss. 
63. Polygonum viviparum, L.—Very general, on spots of rich soil, 
as far as Brandywine Bay. Rises 600 feet above the sea, under lat. 
80°. The typical plant is most common on the west, but on the north 
the var. alpinum, Wbg. Wide Bay, in flower 14th July; Augusti 
Bay, 4th August ; but past flowering in the end of July, on Norse Is- 
land, and in the beginning of August at Magdalena and Cross Bays. 
[63*. Kenigia Islandica, L.—On the west coast, O. Torell, 1858.] 
64. Oxyria digyna, (L.), Campd. ; Rumex digynus, L.; Rheum di- 
gynum, Wbg. ; Ozyria reniformis, Hook.—In similar localities with P. 
viviparum, but more general and with a wider range, being found 
wherever the moss has formed a suitable soil. Seven Island, and on 
the mountain-sides to the snow-line, Nordenskiöld. Generally 3-5 
inches high, with root-leaves 4 inch in diameter; but on richer spots, 
under lat. 80°, it attains a height of 8 inches, with root-leaves 1-13 
inches broad. Treurenburg Bay, in flower 28th June; in the begin- 
ning of July it was generally in bloom. 
SALICINEJXE. 
65. Salix reticulata, L.—Bellsund, Vahl; his specimens are in the 
Riks Museum. The leaves are very small, being about 4 inch broad. 
66. S. polaris, Wbg. Fl. Lap. 261, tab. xiii. fig. 1; S. herbacea, Sol., 
Hooker, in Parry.—This Willow is found wherever moss or soil covers 
the rock. The stem is generally not more than 1 line in diameter, 
though rarely, under very favourable conditions, it may be found as 
