460 
APPENDIX NO. XVIII. 
71. Oxyria digyna, Campd. A. Gray, Man. ed. 1, p. 291. 0 . 
reniformis , Hook. Ruinex digynus , Pursh’s FI. p. 248. Engl. Bot. 
T. 910. 
With the preceding at almost all the stations from 64° to 80°. 
EMPETRACEiE. 
72. Empetrum nigrum, Linn. Pursh’s FI. p. 93. Engl. Bot. T. 
315. A. Gray, Man. ed. 1, p. 409. It is, in those regions, the ordi¬ 
nary food of deer and rabbits.—Dr. Kane. 
Fiske Fiord, 64°; Disco, 70°; and on Smith’s Sound. 
BETULACEJE. 
73. Betula nana, Linn. Engl. Bot. T. 349. Pursh’s FI. p. 622. 
FI. Dan. T. 91. 
Holsteinborg, 68°. 
SALICACEiE. 
74. Salix desertorum, Rich. app. p. 37. Hook. FI. Bor. Am. 
2, p. 151. 
Fiske Fiord, 64°. 
75. S. uva-ursi, Pursh’s FI. p. 610. Hook. FI. Bor. Am. 2, p. 152. 
A. Gray, Man. ed. 1, p. 429. jS . glauca , Horn. app. Gap. Graah’s 
Voy. and Dr. Kane. Stem erect, one foot high, or prostrate. Bark 
of branches greenish. Leaves elliptical or obovatc, slightly toothed, 
glabrous aud shining above, glaucous beneath. The specimens are all 
in a fruiting state, and larger than those of the White Mountains. 
Catkins long, cylindrical, rather loose; pods glabrous, shortly pedi¬ 
cellate, tapering into a beak, of an orange-color or turning black. 
Fiske Fiord and Sukkertoppen, 64° aud 65°. 
76. S. arctica, R. Br. Ross’s Voy. ed. 2, vol. 2, p. 194, and in 
Melville Island Plants, p. 272, (not Pallas.) Hook. FI. Bor. Am. 2, 
p. 152. S. lanala! Dr. K. Prostrate, with tortuous branches fur¬ 
nished with a light brown or yellow bark. Leaves entire and very 
variable, (lanceolate-acutc, elliptic, oval or obovatc, cuneate or spathu- 
late,) strongly veined, subsericeo^is with long hairs, when young or even 
in the fruiting stage, generally very apt to turn black on drying. Fertile 
catkins long-pedunculate, cylindrical or ovoid-oblong; scales villous, 
broad-oval, of a brown or dusky color. Style elongated. Ovary thickly 
tomentose. 
Sukkertoppen, 65°; Holsteinborg, 68°; as far as 76° N. latitude. 
I have been somewhat perplexed with specimens collected by Dr. 
