336 A MANUAL OF MOSSES 



tains to Alabama and Colorado. Rather infrequent in our 



region. 



Allegheny : Darlington Hollow, Sharpsburg, October 



25, 1908, and Power's Run, on shaded 

 rock, November 30, 1909. (Figured). O. 

 E. J. 



Fayette : Ohio Pyle, along Meadow Run Valley, 



four miles south of village, September 1- 

 3, 1906. O. E. J. and G. K. J. 



Mc-Kean : Bennett Brook, August 26, 1894, and 



Quintuple, September 9, 1896. D. A. B. 

 Both near Bradford. 



5. Brachythecium salebrosum [Hoffmann] Bryologia 



Europsea. 



(Hypnuin salebrosum Hoffmann). 



(Plate XLIX) 



Widely cespitose in glossy, dark yellow-green mats : stems 

 usually 5 or 6 cm. or more long, creeping and irregularly 

 branching; stem-leaves lance-ovate, about 1.5-2.5x0-6-1.1 

 mm., in our region apparently somewhat smaller than most 

 descriptions call for; branch-leaves similar, lanceolate, about 

 1.8-2.2x0.5-0.6 mm., abruptly slenderly acuminate, serrate 

 above, entire or sub-serrulate below, concave, the lower mar- 

 gins narrowly reflexed, the narrow insertion dccurrent, both 

 kinds of leaves plicate and erect-spreading, costa thin, usually 

 reaching to the middle or a little above ; median leaf-cells 

 linear-fusiform, flexuous, about 8-12:1, the basal shorter and 

 broader, usually two or three rows of lax, rather large, oblong 

 or sub-quadrate cells across the whole base of the leaf, the 

 alar more numerous, lax, sub-quadrate, rather thin-walled, 

 the alae quite strongly decurrent ; perichretial leaves filiform- 

 acuminate, ecostate or nearly so: seta smooth, castaneous, 

 about 2-2.5 cm. long, flexuous, flattened and twisted when dry ; 

 capsule oblong-ovoid, dorsally turgid, inclined to horizontal, 

 usually somewhat arcuate, about 2-3:1, castaneous, the urn 

 about 2-2.5 mm. long; the lid conic-acuminate, about 1 mm. 

 long ; annulus narrow ; exothecial cells rounded-quadrate at 

 the rim, larger and irregularly oblong or elliptic below, all 

 strongly yellowish-incrassate ; peristome-teeth slender, con- 

 fluent at base, closely trabeculate and lamellate, dorsally cross- 

 striolate and brownish below, hyaline and papillose above, 

 rather prominently margined; segments about as long as the 

 teeth, finely papillose, carinately split and usually gaping; cilia 

 a little shorter, hyaline, nodose, 1 to 3 in number; basal mem- 

 brane about one-third as high as the teeth ; spores mature in 



