24 MIL W. MITTEN — BEYOLOGIA OE THE ST7EYEY 



O. STRANGULATUM, BeauV. 



Hab. Cascade Mountains, British Columbia, Lyall. 



O. anomalum, Hedw. 



Hab. Saskatchewan, Bourgeau. 



O. speciosum, Nees. 



Hab. On rocks near Fort Colville, Lyall. 



O. ELEGANS, ScJlW. 



Hab. Pend Oreille River, and between that and Kootenay River, 

 British Columbia, Lyall. 



The smooth capsule and rather more slender habit seem to be 

 the only differences between this and the preceding ; both forms 

 are found in Europe. 



Very large specimens of what appears to be the same as the 

 European O. Lyellii, Hook., were gathered by Menzies on the 

 ]N".W. coast of America, and were marked by Sir W. Hooker 

 " O. Menziesii" but were never published; there is a great differ- 

 ence in the external look of the specimens, but no appreciable 

 distinction. 



O. consimile. Monoicum, pulvinatum, humile, foliis patentibus e 

 basi ad insertionem angusta inde dilatatis ovato-lanceolatis nervo 

 carinatis, marginibus recurvis reflexisve, cellulis basi paucis oblongis 

 quadratisque superioribus rotundatis, perichsetialibus conformibus, 

 theca in pedunculo brevi exserta ovali siccitate plicata, operculo conico 

 acuminato brevirostro, peristomio dentibus 8, ciliis siraplicibus sequi- 

 longis 8 interpositis, calyptra plicata ramentosa. 



Hab. Vancouver Island, on trees, Lyall. 



Closely resembling 0. Columhicwn, but with shorter leaves. It 

 is also allied to 0. pulchellum, Sm., a species of which the position 

 has not been w r ell understood, it being sometimes placed in JJlota ; 

 but it agrees wdth the smaller species which correspond nearly 

 with 0. speciosum. Nees, and is truly an OrtJiotrichum. 



O. Columbicum. Monoicum, pulvinatum, humile, foliis e basi brevi 

 oblonga erectiore longe lanceolatis patentibus apice latiuscule acutis 

 nervo percurrente carinatis, marginibus reflexis, cellulis basi paucis 

 elongatis superioribus subrotundis, perichsetialibus brevibus, theca in 

 pedunculo brevi exserta ovali-cylindracea siccitate plicata, peristomio 

 dentibus 8, ciliis aequilongis 8 simplicibus alternantibus, calyptra 

 plicata apice rugosa nuda. 



Hab. Vancouver Island, on trees, Lyall. 



In general appearance similar to 0. Tasmanicwnij Hook. f. et 

 "VVils., but rather less. 



