THE MOSSES OF ALASKA 321 



0.5-0.6 lata, sat longe acuminata costaque excurrente cuspidata, apice 

 parce et acute denticulata, marginibus scepius limbatis, limbo inferne 

 angusto, piano, superne crassiore, distincto, interdum subreflexo, 

 rarivis deficiente, costa angusta, basi 50-55 ij. crassa, sensim attenuata, 

 cellulis inferioribus rectangulis, 50-65 p. longis, 17—22 latis, mediis 

 oblongo-hexagonis, 45-55 !'■ longis, 13 latis, marginalibus angus- 

 tioribus linearibus. Capsula in pedicello rubello, 2.5-3 centim. 

 longo, nutans vel pendula, ovato-pyriformis, collo attenuate instructa, 

 3-4 millim. longa, operculo convexo. Exostomii dentes pallida fer- 

 ruginei. Endostomium perfectum, ciliis appendiculatis. Planta 

 mascula brevis, gemmiformis, cespites distinctos efformans, foliis 

 breviter ovato-cuspidatis. 



From Mviir Glacier (Trelease, 2426, 2434, 2441, 2461, 2462) ; 

 Hidden Glacier Inlet in Yakutat Bay (Trelease, 25 iS). 



Bryum acutiusculum C. Miill. in Flora, 18S7, p. 220. 



From Chilkoot (Krause brothers). 

 Bryum caespiticium Linn. Sp. plant., p. 11 21. 



Alaska, sine loco (Frederick Funston, 26) ; Muir Glacier, (Tre- 

 lease, 2427 in part). 



Bryum pallens Sw. Muse, suec, pp. 47, 98, pi. 4, f. 12. 



From head of Russell Fiord (Coville and Kearney, 960) ; Disen- 

 chantment Bay (Trelease, 2522 ; forma rzcbro-vinosa) . New to Alaska. 



BRYUM PSEUDOSTIRTONI Fhilib. sp. nov. 



(PI. XVIII, fig. 4«-3). 



Saepe synoicum, dense cespitosum, sordide vel lutescenti-viride. 

 Caulis elongatus, filiformis, parce ramosus, 2.5-4 centim. altus. 

 Folia moUia, laxiuscula, sicca erecto-imbricata, madida erecto-patentia, 

 caulina ovato-lanceolata, acuminata costacjue longe excurrente cuspi- 

 data, 2 millim. longa, 0.7 lata, marginibus integris planis vel subre- 

 flexis, costa angusta, 60-70 jj. basi lata, rete laxo, cellulis inferioribus 

 rectangulis, mediis superioribusque ovato-hcxagonis, long. 28-^0 //, 

 lat. 14—17, marginalibus angustioribus. Folia I'amea minora, inferiora 

 ovata, subobtusa vel breviter cuspidata. Capsula in pedicello gracili, 

 1.5 centim. longo, nutans vel pendula, oblonga, parva, 2 millim. longa, 

 collo brevi attenuata, sicca sub or econstricta, operculo conico-mamil- 

 lato. Exostomii dentes pallidi, basi rubri. Endostomium perfectum, 

 ciliis nunc longe appendiculatis, nunc simplicibus. Sporaj 12-18 // 

 crassae. 



From Muir Glacier (Trelease, 2448, 2459). 



