OF WESTERN PENNSYLVANIA 235 



On decayed logs, etc., Southern States. Extends into 

 Pennsylvania from the southeast and may be expected along 

 our southern border. 



2. Fabronia octoblepharis [Schleicher] Schwaegrichen. 



(F. ciliaris Bridel ; F. pusilla Schwaegrichen; Pterogonium 

 octoblepharis Schleicher). 



Small, delicate, thinly cespitose : stems creeping with erect 

 branches ; leaves lance-ovate, filiform-acuminate, thin, green, 

 spreading, sometimes 2-ranked. coarsely and irregularly 

 lacerate-dentate on the border, costate to considerably below 

 the middle, non-plicate, plane-margined, closely imbricate when 

 dry; median leaf-cells thin-walled, linear-rhombic to hexagonal, 

 about 8-10:1, the basal clear across the lower one-fourth or 

 one-fifth of the leaf quadrate or sub-quadrate: seta rather long; 

 capsule oval, neck rather distinct, the urn erect, symmetric, 

 more or less contracted below the mouth when dry and empty ; 

 peristome single, with the teeth united in pairs, dark brown, 

 recurved when dry, when old more or less bifid. 



On trees throughout the Central States to Minnesota and 

 southwards. Occurs in southeastern Pennsylvania and may 

 reach the southern part of our region. 



2. ANACAMPTODON Bridel. 



Autoicous: mostly densely cespitose, dark green, when 

 old brownish to yellowish, lustrous : stem long-creeping, dense- 

 ly radiculose ; the branches short, densely-leaved, erect to 

 ascending ; leaves spreading, often secund, ovate to oval, long- 

 acuminate, entire ; costa strong, ending above the middle of 

 the leaf; leaf-cells rich in chlorophyll, elongated rhombic- 

 hexagonal, the basal rectangular ; inner perichsetial leaves 

 elongate, not sheathing, generally acuminate, thinly costate ; 

 *eta 5-8 mm. long, quite thick, straight, smooth, red to dark 

 castaneous, drying twisted ; capsule erect, symmetric, oval, 

 short and thick-necked, drying strongly constricted below the 

 mouth, smooth ; annulus broad, delicate but persistent ; peris- 

 tome double, deeply inserted, the teeth strongly hygroscopic, 

 apically united in pairs, broadly lanceolate, pale brown, di- 

 visural line almost straight ; teeth distantly articulate below, 

 densely finely papillose; basal membrane of inner peristome 

 none, the segments filiform, somewhat shorter than the teeth, 

 non-carinate, brown, almost smooth ; lid conic-convex, straight 

 or obliquely rostrate : spores about .008-.010 mm. 



A genus of four species ; one species each in China, Japan, 

 and Cuba, and the following in Europe and eastern North 

 America. 



