246 A MAXl'AL OF MOSSES 



Fayette : Meadow Run Valiev, four miles south of 



Ohio I'yle. September 1-3. l'X)f>. O. E. J. 

 and ( r. K. J. 



Huntingdon : Bark- of oak tree, Pennsylvania Furnace, 



July 13. 1909. O. E. J. 



McKean : Bolivar Run. Bradford, September 16, 



1897. D. A. B. 



Washington : Linn and Simonton. ( Porter's Catalogue). 



Westmoreland: Shades, near Blackburn, March 25, 1910, 



forming an "apron" on base of white oak 

 tree. O. E. J. and G. K. J. 



5. Anomodon rostratus (Hedwig) Schimper. 



(Lcskca rostrata Hedwig). 



(Plate XXXI V) 



Densely cespitose. tufts bright green above, yellowish 

 inside: primary stems creeping, fasciculately branched with 

 slender julaceous secondary stems and branches; leaves dense- 

 ly imbricate, ovate and concave at base, narrowly lanceolate 

 above with a long and hyaline piliferous acumination, more or 

 less indistinctly two-ranked, the margin crenulate-papillose, 

 often recurved towards the middle ; leaf-cells minute, chloro- 

 phyllose, opaque, rounded-quadrate to oblong-hexagonal, 

 pluri-papillose on both faces, the median marginal rounded- 

 quadrate, about .OOS-.010 mm., the median interior about as 

 wide but more oblong, about 2:1, the median basal longer, 

 hyaline and non-papillose or but slightly so, the apical long and 

 linear, smooth ; costa strong and ending a little below the apex ; 

 perichsetial leaves long, pale, ecostate, the inner with a filiform 

 and often reflexed point about as long as the main portion 

 of the leaf: seta short, about 7-10 mm. long, erect, sinistrorse, 

 richly castaneous: capsule about 2 mm. long, oval-oblong 

 about 2.5:1, erect, symmetric castaneous: lid conic, obliqueh 

 rostrate, about one-half to three-Fifths as long as the urn: 

 teeth small, lance-linear, the di \ isural and dorsal lamellae in- 

 distinct, the teeth with about 15 to 18 nodose articulations, 

 pale, papillose: segments about as long as the teeth, linear, 

 rising from a basal membrane about one-third as high as the 

 teeth, the cilia solitary and rudimentary or none: exothecial 

 cells medium-walled, oblong-rectangular to oblong-hexagonal, 

 becoming quadrate above, about two rows at the rim much 

 smaller and heavily castaneous-incrassate ; spores mature in 

 fall, thin-walled, nearly smooth, slightly brownish, about .010 

 mm. in diameter. 



On rocks or more usually on the bases of trees ; Europe, 

 Asia, and from Canada to the Gulf States. Very common in 

 our region, especially on the base of white oak trees. 



,-1 



