[343] "T^^ MOSSES OF ALASKA 303 



Hypnum kratisei C. Mull, in Flora, 1887, p. 224. 



From Takhin valley (Dr. Krause). 



This moss, that C. Miiller placed in his section Illecebrina^ which 

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

 hypnu?n {^Limnobium 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. subeugyrium occidentale 

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

 ous and much less chlorophyllose areolation, and its thinner costa. 



Section Calliergon Sulliv. 

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



From Yakutat Bay (Trelease, 1795); Kodiak (Trelease, 1842 in 

 part); Sitka (Trelease, 2369). 

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



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

 1208) ; Sitka (Trelease, 2007) ; Port Clarence (Trelease, 1869, 2013, 

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

 Island (Trelease, 2033). 

 Hypnum sarmentosum Wahlenb. Fl. lapp., p. 380. 



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



Hypnum sarmentosum beringianum var. nov. 

 Hypnum sarmentosum 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, 1888 in part, 1889). 



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

 H. brunneo-fuscum C. Mull, from the Chukchi peninsula, but the 

 latter has a different fades, 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, 1866, 1870). 



Section Calliergidium Ren. in litt. 

 PseudocaUiergon 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. 



