[305] THE MOSSES OF ALASKA 265 



Barbula treleasei sp. nov. 



(PI. XV, fig. 2-9.) 



Dioica? dense cespitosa, lutescenti-viridis. Caulis 1-2 centim. 

 altus, erectus, divisus. Folia siccitate crispatula, madore erecto-pa- 

 tentia, circa 1.5 millim. longa, 0.6 lata, ovato-lanceolata, breviter 

 acuminata, integra, marginibus e basi longe revolutis, costa valida, 

 rubella, percurrente, basi 80 /* crassa, cellulis inferioribus rectangulis 

 subhyalinis, levibus, mediis superioribusque minutis (diam. 8 /*), 

 quadratis, valde papillosis, parum distinctis. Folia perichaetialia 

 multo longiora et latiora, sat subito constricta, longe acuminata, madore 

 arcuato-patula, intima subvaginantia, in dimidio inferiore hyalina. 

 Capsula in pedicello 10-11 millim. longo, erecta, oblongo-cylindrica. 

 Caetera desunt. 



From Juneau (Trelease, 2179, 2181). 



This moss has the aspect of a slender B, fallax Hedw. ; but the 

 texture of the leaf base, formed of rectangular subhy aline cells, clearly 

 separates it. On the other hand, it differs from B. mnealis Brid. and 

 allied forms by the much shorter leaves. 



Barbula rigens sp. nov. 



(PI. XV, fig. I "?.) 



Rubella, laxe cespitosa vel aliis muscis gregarie intermixta. Caulis 

 gracilis, erectus, rigidulus, divisus, 1-2 centim. altus. Folia sicca 

 crispatula, madida erecto-patentia, stricta, breviter lanceolato-linearia, 

 1.25-1.5 millim. longa, 0.3 lata, marginibus integris medium versus 

 paululum revolutis, costa valida, tota fere longitudine aequaliter crassa, 

 diam. 56 /*, biconvexa, percurrente vel in mucronem brevem excurrente, 

 cellulis inferioribus rectangulis, hyalinis, plerumque levibus, superiori- 

 bus opacis, indistinctis, quadrato-rotundatis, utraque pagina dense 

 papillosis, mediis circa 1 1 /t latis. Caetera ignota. 



From Orca (Trelease, 2260; mixed with Distichium capillaceum 

 and Ancectangium compactum). 



This species belongs to the group of B. rigidula Mitt., from which 

 it is easily distinguished by its stiff stem and leaves, the latter being 

 shorter and very briefly acuminate and by its much more papillose 

 areolation. 



Barbula cylindrica Sch. in Hedwigia, 1873, p. 47. Syn.,ed. 2, p. 208. 



From Prince of Wales Island (J. M. Macoun). 

 Barbula fragilis Br. eur., fasc. 62-64, Suppl., pi. 4. 



From Port Wells (Coville and Kearney, 1291 in part). 



