[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., M^hich 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 D. crispula. (Cfr. Kindberg, Notes on 

 Canadian Bryology, 1893, and Eur. and N. Amer. Brylneae, 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 Weisiacese, Orecnveisia 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- 

 alfestre Kindb. in Mac. Cat. Can. pi., vi, MuscI, pp. 17 and 257. 



Cynodontixim treleasei sp. nov. 



(PI. xm, figs. I"-*.) 



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

 lim. altus. Folia siccitate crispata, madore patentia, 2-3 millim. longa, 

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

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

 rente, cellulis inferiorlbus rectanguHs, 2—3 long, quam lat., superi- 

 oribus Irregularibus, plerisque subquadratis, opacis et papillosis, 9—15 

 fi. longis, 8-9 latis, cellulis alaribus majoribus, sublnflatis, lutescenti- 

 bus. Flos masculus In ramo brevi. Folia perlchaetialia intima vagi- 

 nantla, 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 distlnctus. Peristomlum elatum. Intense purpureum, 0.5 

 millim. altum, valde papillosum, dentibus Irregularlter bl-trlfurcatis. 

 Sporae leves, 16-18 jti crassae. 



From Port Wells (Trelease, 2268, 2271). 



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

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



