THE MOSSES OF ALASKA 343 



Hypnum krausei C. Mull, in Flora, 18S7, p. 224. 



From Takhin valley (Dr. Krause). 



This moss, that C. ISliiller placed in his section Illecebrijia^ which 

 corresponds to the genus Scleropodium Br. eur., is certainly a Hygro- 

 hypnu7n i^Limtiobiii?n Sch.), as appears from an examination of the 

 original specimen, which was communicated to us by the Royal Bo- 

 tanical Museum in Berlin. It comes near H. sjibeugyrium occidentale 

 Card. & Ther., but differs from it by its longer leaves, its almost scari- 

 ous and much less chloi*ophyllose areolation, and its thinner costa. 



Section Calliergox Sulliv. 

 Hypnum cordifolium Iledw. Descr., iv, p. 97, pi. 37. 



From Yakutat Bay (Trelease, 1795) ; Kodiak (Trelease, 1843 in 

 part); Sitka (Trelease, 2369). 

 Hypnum schreberi Willd. Prodr. fl. berol., no. 955. 



From White Pass, 3,000 ft. (Trelease, 1950) ; Orca (Setchell, 

 120S) ; Sitka (Trelease, 2007) ; Port Clarence (Trelease, 1S69, 2013, 

 2035); St. Matthew Island (Coville and Kearney, 21 10); Hall 

 Island (Trelease, 2033). 

 Hypnum sarmentosum Wahlenb. Fl. lapp., p. 3S0. 



From Port Wells (Coville and Kearney, 1293 in part). 



HYPNUM SARMENTOSUM BERINGIANUM var. nov. 

 Hypfiiim sarmejitosum Wahlenb. Fl. lapp., p. 380. 



A forma typica differt caulibus gracilioribus, laxius foliosis, costa 

 latiore et praesertim cellulis alaribus multo minoribus, pro more 

 quadratis, vix dilatatis. 



From St. Matthew Island (Trelease, iSSS in part, 1S89). 



By the structure of the angles of the leaf, this moss comes near 

 U. br7i7ineo-fuscum C. Miill. iroxw the Chukchi peninsula, but the 

 latter has a different facies, a closer areolation and a much thinner costa. 

 Hypnum stramineum Dicks. Fasc. pi. crypt., 11, p. 6, pi. i, f. 9. 



From Unalaska (U. S. S. Albatross Exped., 11); Port Clarence 

 (Trelease, 1S66, 1S70). 



Section Calliergidium Ren. in litt. 

 Pseudocalliergon Ren. in Bryologist, iv, p. 63, non Limpr. 



HYPNUM PLESIOSTRAMINEUM Ren. sp. nov.^ 



(PI. XXIII, fig. 2«-*.) 



Cespites laxi, molles. Caulis gracilis, erectus, 4-6 centim. altus, 



simplex vel parce ramosus, ramis gracilibus. Folia sat conferta, 



' See note 3, p. 347. ' 



