42 ME. W. MITTEN — BRYOLOGIA OP THE SURVEY 



In large interwoven patches of a dull-green colour. In general 

 appearance very similar to that form of H. cupressiforme known 

 as " tectorum" but its affinity is in other respects with H. reptile, 

 Mich., in the form and especially the substance of its leaves, and 

 in the plication of those of the perichsetium ; but the present 

 species is certainly dioicous, more robust, and with scarcely serru- 

 late leaves. 



S. circularis, sp. nov. Caule rufescente fastigiate ramoso, foliis 

 secundis circinatis ovato-lanceolatis apice angustis acutis, breviter 

 binervatis marginibus basi tantum subserrulatis, cellulis ad angulos 

 paucis abbreviatis subobscuris flavidis, superioribus elongatis latitudine 

 gooQ longitudine 600Q - circiter unciae metientibus pellucidis. 



Hab. Beechey Island and Wellington Channel, Lyall. 



Pale yellowish green slightly tinged with brown. Stems one 

 or two inches high ; branches irregularly disposed, fastigiate ; 

 leaves all circinate, and so closely directed to the ventral side of 

 the stem as to be laterally compressed. In general appearance 

 and size nearest to H. callichroum, Brid., but the areolation of the 

 base of the leaf is different. 



(Lwmobium, Schimp.) 



S. obtusifolius, Hook, et Wils. 



Hab. Poseidon River, Lyall. 



A few specimens, all without fruit. 



S. arcticus, Sommerf. 



Hab. Rocky Mountains, Lyall. 



S. ochraceus, Turner. 



Hab. Cascade Mountains, British Columbia, Lyall. This moss is 



found also in Davis's Straits ; and a few fragments of S. turgescens, 



Scbimper, were also obtained there by Mr. Taylor. 



(Cuspidaria, C. Miiller.) 



S. Schreberi, Willd. 



Hab. Saskatchewan, Bourgeau. 



This species does not well range here. 



S. cuspidatus, Linn. 

 Hab. Pack River, Lyall. 



S. Richardsoni, sp. nov. Monoicus, csespitosus, ramis inordinatim 

 pinnatis apice cuspidatis, foliis patentibus late ovatis apice rotundatis 

 obtusis concavis integerrimis nervo medio evanido, ramulinis oblongo- 

 lanceolatis obtusis, cellulis elongatis apicibus prominulis alaribus laxis 

 ventricosis pallidis, perichaetialibus ovalibus acutis laevibus imbricatis 



