NEW AMERICAN MOSSES. 



From Memoir? ol ihe Tc^rrcv Brnanical Cliih, •>: No. 2. 



BrACHYTHECIUM POPULEIM ilVATLM 11 \ar. (Jftoii h.ivini^ llie 

 appearance of var. ruffscens, l)ut with thi- stem k-.ivcs l)roadly 

 cordate-ovate. 1.4 by o.h mm., concave, margins rcHexod below, 

 rather abruptl\- narrowed tci a much shorter subulate acuminalion; 

 rosta verv >tout. often ending below apex; branch leaves ovate- 

 lanceolate, medium cells 5: I. On dry rocks in woods with Gnm- 

 mia apocarpd. Johnson and Peacham. \t.; Indian Falls, Owen 

 Sound; New Harbor, Newfountlland. Jan. y>. i^Mi. 



Br.\chvthech.'.m Leibergh. Branch leaves falcate-secund. 

 decurrent, 1.2 0.4. mm. lanceolate, gradually very slenderly 

 acuminate, serrate, costate to bc>ond the middle; median cells 

 fusiform, 8-10; i; 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 papilk-e; capsule light brown, 1.5 mm., long, i. 5-2: I. short- 

 ovoid, unsymmetric. horizontal; operculum short conic; annulus 

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

 of "Bareknob." Traille River Basin. Idaho, alt. 5.500 feet. (J- 

 B. Leiberg, 2^>i. July, 1891.) The gametophyte closely resembles 

 B. erythrorrhizon, from which it differs in the rough seta and in 

 being monoicous. Easily distinguished from B. velutinum b>- the 

 larger stem leaves. 



DiCRANUM LOXGIFOLIUM siBALPiN'UM Mildc. "Densely tuft- 

 ed and reminding one strongly of Campylopus SchwarLzn, blackish 

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

 mosth- broken off, much less strongly dentate." Limpicht, Laub- 

 moose. On exposed rocks of "the Nose" Mt. Mansfield summit. 

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

 rerriarks that it is sparingly collected in Europe. 



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

 (^rout. Bull. Torn. Bot. Club, t>,5: 221-256. 1898. 



Elrhvnchium STRiGOSu.vt ROBUSTLM Roell, Hedwigia. 36: 52. 

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

 Gametophyte' with the habit Brachythecium pliimosum, branches 

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

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

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

 slightlv 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 

 subftliform. \sporoplivte rather larger than in the typical form. 

 Tvpe locality, vicinity of Chicago, III.; Eastern Canada and in 

 the United States from Louisiana to Minnesota and eastward. 

 More abundant northward. The common eastern form. 



— Mr. B. D. Crilbert has a specimen of Dicranum spurmm, col- 

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



