OF WESTERN PENNSYLVANIA 353 



angles, the leaf-apex often twisted about half-around to the 

 right, (sinistrorse) ; median leaf-cells about 5-6:1, oblong- 

 hexagonal, somewhat shorter and broader below and at the 

 basal angles; perich^etial leaves ovate, abruptly long-acumi- 

 nate, faintly costate ; costa of branch- and stem-leaves reach- 

 ing about to the middle; stem-leaves similar to the branch- 

 leaves : seta short, very rough, dark castaneous ; capsule dark- 

 castaneous, blackish when old, about 4-5:1, reaching about 

 3.5 mm. in length, oblong, erect, slightly curved ; lid conic- 

 acuminate ; peristome normal ; annulus double, large ; spores 

 mature in winter. 



On the ground and on stones in swamps and wet, shady 

 places ; Europe, Asia, and from Canada to Missouri and North 

 Carolina. Rather uncommon in our region. 



Butler : On swampy soil, Crider's Corners, Decem- 



ber 29, 1908. O. E. J. 



McKean : Bradford. D. A. Burnett. (Porter's Cata- 



logue). 



2. Bryhnia graraiiiicolor [BridelJ Grout. 



{Hypnum graininicolor Bridel ; H. sullivantii Spruce; Eurhyti- 

 chiuiii graminicolor Paris). 



(Plate LIV) 



Small, much more slender than the preceding species, 

 densely to loosely cespitose, pale green, yellowish below : stems 

 slender, red, usually not over 1-2 cm. long, rather irregularly 

 branched with erect branches; branch-leaves reaching about 

 0.8x0.2-0.3 mm., narrowly lance-ovate, long-acuminate, con- 

 cave, serrulate to the base, marginally reflexed below, the base 

 scarcely decurrent, the back strongly papillose by reason of 

 the projecting cell-angles, the costa reaching to above the 

 middle; stem-leaves larger, up to 0.8-1.0x0.4-0.5 mm., with a 

 somewhat more slender acumen; median leaf-cells linear- 

 flexuous, incrassate, varying from 8-20:1, minute, obtuse, the 

 alar sub-quadrate, thin-walled, pellucid; penchsetial leaves ob- 

 long, basally sheathing, filiform-acuminate, very faintly 

 costate : seta about 1 cm. long, rough throughout ; capsule oval 

 to oblong or turgid-ovate, dorsally somewhat gibbous about 

 2-3:1, inclined, about 2-2.5 mm. long; annulus simple per- 

 sistent ; lid conic to short-rostrate ; peristome normally 

 hypnoid, segments as long as the teeth, carinately split, the 

 cilia 2, somewhat shorter; rather uncommon, capsules rarely 

 produced. 



In moist woods and shady places on rocks or earth ; from 

 New Brunswick to Minnesota and south to Georgia. Rare in 

 our region. 



