38 APPENDIX. 



cescentibus, germinibus elongato-pedicellatis ovato-subulatis tomentosis, stigmate 

 sessili quadrifido. S. phylicifolia, Smith. Comp. FL Br. p. 146 ? Engl. Bot. t. 1958 ? (W.) 



Folia sesquipoUicaria, exstipulata, pube sericea caduca? vestitii, subtus §^risea sub-g^lauca. Amenta 

 foeminea ssepe fere palmaria pedunculata foliis tribus quatuorve fulcrata. SquamcB elliptic» pallide brunnese 

 pilosae. Pedicelli primo squamas vix superantes mox ad longitudinem ung^uicularem elong^ati et squamis 

 triplo quadruplove longiores. Germina e basi ovata in rostrum fere cylindricum producta, semper pedicellis 

 long^iora. 



Obs. Seven or eight species of salix in the collection remained undetermined from the specimens not 

 being perfect. 



416. Empetrum nigrum, Willd. iv. p. 713. Pursh. i. p. 93. (W.B.) 



In high northern latitudes its berries, after the first frosts, are very juicy and pleasant. They are 

 hoarded up by the different species of marmots, and form the autumnal food of the Anas hyperborea. 



417. Myrica gale, WiUd. iv. p. 745. Pursh. ii. p. 618. (W.) 



The Indian women use the buds of this plant to dye their porcupine quills with. 



418. PopuLus TREPiDA, JVUlcl. iv. p. 803. Pursh. ii. p. 618. (W.) 



Hub. From Hudson's Bay to the northward of Great Slave Lake, as far as lat. 64°. It is denominated 

 by the Cress, Metoos, and is esteemed to burn better in a green state than any other tree in the country. 



419. P. BALSAMiFERA, WUld. Iv. p. 805. Pursh.u.p. 618. (W.) 



The trunk of this tree attains a greater circumference than that of any other in the northern parts of 

 America. It burns badly, and gives little heat when green, but its ashes yield a large quantity of potash. 

 We traced it as far to the north as Great Slave Lake, and the south branch of Mackenzie's River has 

 been named Riviere aux Liards, from its abundance in that quarter. It constituted the greatest part of the 

 drift timber that we observed on the shores of the Arctic Sea. Its Cree name is Matheh-metoos, (ugly 

 poplar.) 



420. JuNiPERus COMMUNIS, PFiUd. iv. p. 853. Pursh. ii. p. 647. (W.) 

 Its fruit is termed Caw-caw-kew-meena, (crow-berry), by the Crees. 



421. J. PRO STRATA, PeTs. encMr. ii. p. 632. (W.) 



It is nearly as common as the other species, grows close to the ground, and sends out flagelliform 

 branches two yards long. It is a very ornamental plant in thin rocky soils. 



422. HippopHAE CANADENSIS, WUld. iv. p. 744. Pursh. i. p. 115. (W.B.) 



423. Negundo FRAxiNiFOLiuM, D. C. prodr. i. Tp. 59() 1 Acer sacch. Frankl. App. 

 I ed. p. 754. (W.) 



Obs. The Saskatchawan is the northern boundary of this tree, and even there pretty good sugar is 

 made from its juice. We saw only the male flowers ; and the tree was not in leaf when we were in that 

 quarter. 



CRYPTOGAMIA. FILICES. 



424. EauisETUM ARVENSE, fViUd.\.-p. 1. Pursh. i'l. p. 65\. (W.) 



425. E. sYLVATicuM, JVilld. v. p. 3. Pursh. ii. p. 651. (W.) 



426. E. uMBRosuM, WiUd. v. p. 4? (W.) 



Charactere specifico quadrat. Vaginae glaucae dentibus circiter 14 nigro-fuscis, marginibus hyalinis. 



427. E. PALusTRE, WiUd. v. p. 5. Pursh. ii. p. 651. (B.) 



