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APPENDIX.
Salix reticulata. L. supra.
Salix nivalis. Hook. l. c. ii. p. 152. This was discoyered in the Rocky Mountaina by Mr. Dnumnond during Sir John Franklin's journey: and it is the only plant, of the above lists, which was not detected on the same Arctic shores by Dr. Richardson during his and Sir John Franklin's overland journey.
