[295] THE MOSSES OF ALASKA 255 



are too variable and insufficient to establish a specific distinction. D. 

 contermina must therefore be considered as only a variety of D. 

 crispula, and the specimens from Alaska and the islands of Bering 

 Sea are nearly all intermediate between the type and this variety. 



D. obliqua Kindb., which has been recorded from Alaska, is un- 

 known to us ; but, from the description, it is probable that it, like- 

 wise, is only a form of Z>. crispula. (Cfr. Kindberg, Notes on 

 Canadian Bryology, 1893, and Eur. and N. Amer. Bryinea, p. 210.) 



Rhabdoweisia fugax Br. eur., fasc. 33-36, p. 4, pi. 41. 



From Kodiak (Trelease, 2217, 2218). New to Alaska. 

 Rhabdoweisia fugax subdenticulata Boul. Muse, dela France, p. 543. 



From Juneau (Brewer and Coe, 6990) . New to Alaska. 



Another species of Weisiaceae, Oreoiveisia serrulata Sch., has been recorded 

 from Nulato by J. T. Rothrock and by Lesquereux and James (Manual, p. 58). 



Family DICRANACEJE. 

 Cynodontium torquescens Limpr. Laubm., i, p. 288. 



From Port Clarence (Trelease, 2101, 2102, 2525). 



Number 2101 has the peristome smooth or nearly so; it is C. sub- 

 alpestre Kindb. in Mac. Cat. Can. pi., vi, Musci, pp. 17 and 257. 



Cynodontium treleasei sp. nov. 



(PL xm, figs, i*-*.) 



Monoicum, densiuscule cespitosum. Caulis erectus, brevis, 3-4 mil- 

 lim. altus. Folia siccitate crispata, madore patentia, 23 millim. longa, 

 e basi oblonga sat subito constricta, longe et anguste acuminato-subulata, 

 apice sinuato denticulata, marginibus planis et integris, costa percur- 

 rente, cellulis inferioribus rectangulis, 2-3 long, quam lat., superi- 

 oribus irregularibus, plerisque subquadratis, opacis et papillosis, 915 

 fji longis, 8-9 latis, cellulis alaribus majoribus, subinflatis, lutescenti- 

 bus. Flos masculus in ramo brevi. Folia perichaetialia intima vagi- 

 nantia, longe acuminata. Capsula in pedicello brevi, 7-8 millim. 

 longo, nutans vel inclinata,breviter ovato-convexa, interdum strumulosa, 

 levis vel vix striatula, operculo longe oblique rostrato, basi crenulato. 

 Annulus distinctus. Peristomium elatum, intense purpureum, 0.5 

 millim. altum, valde papillosum, dentibus irregulariter bi-trifurcatis. 

 Sporae leves, i6-i8/jt crassae. 



From Port Wells (Trelease, 2268, 2271). 



This species is only comparable with C. polycarpam Sch., from 

 which it is easily distinguished by its smaller size, its shorter, smooth or 



