NEW AMERICAN MOSSES. 



From Memoirs of the Torrey Botanical Club, 6 : No. 2. 



Brachythecium populeum ovatum n. var. Often having the 

 appearance of var. rufescens, but with the stem leaves broadly 

 cordate-ovate 1.4 by 0.8 mm., concave, margins reflexed below, 

 rather abruptly narrowed to a much shorter subulate acumination ; 

 costa very stout, often ending below apex; branch leaves ovate- 

 lanceolate, median cells 5: r. On dry rocks in woods with Grim- 

 mia apocarpa. Johnson and Peacham, Vt. ; Indian Falls, Owen 

 Sound; Xew Harbor, Newfoundland, Jan. 30, 1881. 



Brachythecium Leibergii. Branch leaves faicate-secund, 

 decurrent, 1.2X0.4 mm -. lanceolate, gradually very slenderly 

 acuminate, serrate, costate to beyond the middle; median cells 

 fusiform, 8-10: 1; basal shorter and broader; quadrate alar cells 

 numerous ; stem-leaves ovate to ovate lanceolate, more strongly 

 plicate; monoicous. Seta red-brown, roughened with rather 

 low blunt papillae; capsule light brown, 1.5 mm., long, 1. 5-2: 1, 

 short-ovoid, unsymmetric, horizontal; operculum short conic; 

 annulus present ; cilia two or three, appendiculate. Type locality, 

 summit of "Bareknob," Traille River Basin, Idaho, alt. 5,5000 feet. 

 (J. B. Leiberg, 2S8. July, 1891). The gametophyte closely re- 

 sembles B. erythrorrhizon, from which it differs in the rough 

 seta and in being monoicous. Easily distinguished from B. 

 velutinum by the larger stem leaves. 



Dicranum longifolium subalpinum, Milde. 11 Densely tufted 

 and reminding one strongly of Campylopus Schwartzii, blackish 

 green, leaves erect- spreading, stiff, shorter than in the species, 

 mostly broken off, much less strongly dentate." Limpicht, 

 Lauhmoose. On exposed rocks of "the nose " Mt. Mansfield sum- 

 mit. July '96, A. J. Grout. Determined by Prof. R. H. True, 

 who remarks that it is sparingly collected in Europe. 



From a revision of the North American Eurhynchia, by A. J. 

 Grout. Bull. Torr. Bot. Club, 25 : 221-256. 1898. 



Eurhynchium strigosum robustum, Roell, Hedwigia, 36 : 52. 

 1897. Eurhynchium strigosum (in part) of American authors. 

 Gametophyte with the habit Brachythecium plumosum, branches 

 6-12 mm., long, ascending or erect, often fasciculately divided, 

 terete-foliate, more blunt than in E. strigosum ; leaves from the 

 middle of the branches erect spreading, ovate-lanceolate, very 

 slightly or not at all decurrent, 1-1.3X0 4-0.5 mm., usually acute; 

 quadrate and oval alar cells confined to the extreme angles ; stem 

 leaves 1. 2-1. 5X0.4-0 6 mm., longer acuminate, acumination often 

 subfiliform. Sporophyte rather larger than in the typical form. 

 Type locality, vicinity of Chicago, 111. ; Eastern Canada and in 

 the United States from Louisiana to Minnesota and eastward. 

 More abundant northward. The common eastern form. 



— Mr. B. D. Gilbert has a specimen of Dicranum spurium, col- 

 lected by E. C. Howe, at New Baltimore, N. Y. 



