INTRODUCTION. 



XI 



Dr. Richardson, in his last letter, written to us from Fort 

 Franklin, Great Bear Lake, says as follows : 



" Drummond's Mosses will probably be the most complete 

 collection made in North America, and, I hope, will nearly equal 

 the British Muscologia in number of species. The following list 

 contains those not gathered in the former journey :- 



Sphagnum latifolium. 

 Andrcea rupestris. 

 Phascum subulatum, 



crispum, and 9 



Diphyscium foliosum. 

 Gymnostomum pyriforme, 



truncatulum ? 



lapponicum, 



rupestre. 

 Encalypta streptocarpa, 



rhaptocarpa. 

 Weissia controversy 



curvirostra. 

 Grimmia affinis. 

 Tortula subulata, 



convoluta. 

 Trichostomum pallidum, 



microcarpum. 

 JPterogonium, duce species. 

 Leucodon sciuroides, et altera sp. 

 Dicranum longifolium, 



montanum 9 



heteromallum, 



rufescens, and nov. sp. 

 Didymodon trifarium, 



glaucescens, 



inclinatum. 

 Cynontodium flexicauk. 

 Orihotrichum clavellatum, 



pumilum, 



JLudwigii, 



crispum 9 

 Bartramia fontana y 



pomiformis, 



crispa. 

 Funaria 9 



Fontinalis capillacea, abundant and 



in fruit. 



Anarrhopterum heterostichum. 

 Anomodon viticulosum. 

 Bryum roseum, 



argenteum, 



punctatum, 



cuspidatum, (the cuspidatum of 

 the former journey proves to be 

 B. affine) 



marginatum, 



turbinatum. 

 Leskece tres. 

 Hypnum triquetrum, 



abietinltm, (in fruit both on 



Lake Superior and on Great 

 Bear Lake) 



dimorphum, 



rutabulum, 



cupressiforme, 



illecebrum, 



velutinum, 



incurvatum, 



prcefongum, 



Halleri 9 



aureum, 



riparium, 



alopecurum, 



aduncum, 



stellatum, 



Silesianum, 



pulchellum, 



polymorphism, 

 julaceum, 



palustre, et tria altera. 



