40 MR. W. MITTEX — BRYOLOGIA OE THE SURVEY 



S. rufescens, Dicks., in a small state, was collected in Davis's 

 Straits by Mr. Taylor ; and from the same region he brought 

 another species, which will certainly be found in Europe when 

 carefully sought for. It may be characterized thus : — 



S. rubelluSj sp. nov. Dioicus, caespitosus, ramis erectis parce ramosis, 

 foliis imbricatis ovatis concavis apiculo brevi flexuoso marginibus 

 revolutis nervis binis brevissimis, cellulis elongatis alaribus incon- 

 spicuis, pericbaetialibus imbricatis ovato-lanceolatis. 

 Hab. Davis's Straits, Taylor; Rocky Mountains, Drummond, inter- 

 mixed with Catoscopium nigritum, Hedw. Sassar Pass, Nubra Moun- 

 tains, Tibet, alt. 16,000-17,000 feet, Thomson. 



A small moss, with all the habit, appearance, and colour of 

 OrtJiothecium intricatum, Bryol. Europ., but differing in its almost 

 exactly ovate leaves, with a short, sometimes discoloured apiculus, 

 the margins revolute, and the areolation composed of cells which 

 are twice as wide. In the same particulars it differs from O. rufes- 

 cens and O. chrysevm. 



(Pylaiesia, Schimp.) 



S. polyanthus, Sclirad. 



Hab. Saskatchewan and Rocky Mountains, Bourgeau. 



This moss appears to be abundant in British America. 



(Drepanium, Schimp.) 

 S. reptilis, Mich. 

 Hab. Kootenay River, British Columbia, Lyall. 



S. plicatilis, sp. nov. Dioicus, fastigiate ramosus, foliis falcatis 

 secundis late ovatis acuminatis hamatis siccitate ruguloso-subplicatis, 

 nervis brevibus, marginibus reflexis integerrimis, in ramulinis apice 

 serrulatis, cellulis ad angulos pluribus abbreviatis parvis obscuriusculis, 



\ K g 



superioribus latitudine g^Q longitudine ^^ circiter unciae metienti- 

 bus parietibus tenuibus, perichsetialibus erectis elongatis internis late 

 oblongo-lanceolatis apice subulatis integerrimis plicatis, theca in 

 pedunculo elongato cylindracea basi erecta medio curvata, operculo 

 conico, peristomio interno processibus luteis perforatis ciliis binis 

 aequilongis nodulosis interpositis. 

 Hab. Davis's Straits, Taylor ; Rocky Mountains, Bourgeau. Also the 

 " Hypnum cupressiforme ($. compressum," Sweden, Sommerfeldt, in 

 Herb. Hooker, appears to be the male plant, but is much less than 

 any of the American specimens. 

 In size and general appearance the few specimens yet seen of 

 this moss resemble Hypnum callichroum, Brid., and are pale yel- 

 lowish green, the older parts brown ; it differs from all the states 

 of H. cupressiforme in the strongly reflexed margins of its leaves 

 and short cells. 



