[319] THE MOSSES OF ALASKA 279 



Mons. Philibert describes the lid of this species as " convexe, peu 

 saillant et obtus." We have seen it mamillate. 



Subgenus EUBRYUM Lindb. 

 Bryum bimum Schreb. Spic. flor. lips., p. 83. 



From Muir Glacier (Trelease, 2460). New to Alaska. 

 A short form. 



Brytim pallescens Schleich. Crypt, exsicc. helv., no. 28. 



From Indian Camp in Yakutat Bay (Brewer and Coe, 650) ; Dis- 

 enchantment Bay (Brewer and Coe, 633) ; Hubbard Glacier (Coville 

 and Kearney, 1070) ; Egg Island (Coville and Kearney, 1085) ; Muir 

 Glacier (Trelease, 1791, 2420, 2435, 2436, 2439, 2457) ; Port Wells 

 (Trelease, 2264) ; Douglas Island (Trelease, 2398) ; Agattu Island 

 (U. S. S. Albatross Exped., 28, 32) ; St. Matthew Island (Trelease, 

 2145) ; St. Paul Island (Coville and Kearney, 1835 ; Trelease, 2068) ; 

 Plover Bay, Siberia (Trelease, 2060, 2096, 2535). 



Several forms. Some specimens are rather doubtful because of the 

 bad state of the capsules. 



Bryum cylindrico-arcuatum Philib. sp. nov. 



(PI. XVIII, fig. 2-*.) 



Monoicum (fide Philibert), viride, densiuscule cespitosum, radiculis 

 numerosis intertextum. Caulis erectus, 1-2 centim. altus, superne 

 ramos graciles emittens. Folia ad basin caulis et ramorum minuta, 

 remota, superiora majora, in comam congesta, circa 2 millim. longa, 

 i 1.2 lata, sicca erecta subflexuosa, madida patentia patulave, e basi 

 paululum decurrente ovato- vel oblongo-lanceolata, late breviterque acu- 

 minata, mucronata, marginibus integris haud limbatis parce revolutis, 

 costa basi 80 /* crassa superne attenuata breviter excurrente, rete den- 

 siusculo, cellulis inferioribus laxioribus rectangulis, 55-85^ longis, 22 

 latis, mediis oblongo-hexagonis, long. 2856^, lat. 14, superioribus 

 minoribusbrevioribusque. Flos masculus terminal's, 25-30 antheridiis. 

 Capsula in pedicello rubello flexuoso, 2 centim. longo, apice curvato, 

 nutans vel pendula, anguste cylindrica, arcuata, longicollis, operculo 

 obtuse conico. Peristomii dentes longissimi, basi rubri. Endosto- 

 mium valde perfectum, ciliis appendiculatis. Sporae leves, diam. 12 /z. 



From Kodiak (Trelease, 2186). 



Bryum argenteum Linn. Sp. plant., p. 1120. 



From Bogoslof volcano (Coville and Kearney, 2614 in part) ; St. 

 Paul Island (Trelease, 1513, 2090; J. M. Macoun). 



Number 2090 is a form near var. majus Br. eur. 



