170 A MANUAL OF MOSSES 



On shaded, moist, earthy banks, bases of trees, etc., Japan 

 and in North America from Ontario to Wisconsin, and Texas 

 to Florida. 



Fayette : Ohio Pyle, J. A. S. June 15, 1902. (Fig- 



ured) ; May 30-31, 1908. O. E. J.; Sep- 

 tember 1-3, 1906. O. E. J. and G. K. J. 

 AIcKean : Gates Hollow, August 4, 1894. D. A. B. 



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



2. Aulacomnium palustre [Linnseus] Schwaegrichen. 



(Mnium palustre Linnseus). 



(Plate XXIV) 



Robust, densely cespitose mosses of bogs and moist places 

 on soil or rotten wood; tufts often 2-3 inches deep, light yel- 

 lowish-green above, below darker and stem covered with a red- 

 dish-brown tomentum ; leaves oblong to linear-lanceolate, 

 about 4 mm. long, minutely denticulate towards the apex, 

 carimate, rather crispate when dry; costa strong, ending just 

 below apex; upper cells small, round incrassate, unipapillate, 

 basal cells elongate-rectangular or hexagonal, thin-walled : seta 

 erect, tortuous, in ours about 3 cm. long, upper part dextrorse, 

 lower part sinistrorse; capsule sub-cylindrical, 4—5 mm. long, 

 when dry strongly sulcate, arcuate, constricted below mouth; 

 annulus high, colored at the base ; teeth lance-linear, subulate- 

 acuminate, yellowish, trabeculae sometimes united by oblique 

 walls, divisural zigzag ; segments delicate, slightly shorter, 

 hyaline, cilia about 3, equally long, weakly articulate; spores 

 small, smooth .008-009 mm. ; mature in early summer ; opercu- 

 lum long-conic, often somewhat recurved. 



Cosmopolitan. In swampy woods and bogs. In North 

 America from the Arctic regions south to the Carolinas and 

 California. Rather common in the northern part of our region. 



Allegheny : Coraopolis, August, 1905. O. E. J. and 

 G. E. K. 



Beaver : In swamps near New Galilee, June 22, 



1908. O. E. J. 



Erie : Presque Isle, May 8-9, 1906. O. E. J. 



(Figured). 



Lawrence : Swamp, north of New Castle, 1906. Susan 



Gageby. 



McKean : Quintuple, October 1, 1893, and Sphag- 



num Swamp, West Branch, Bradford, 

 January 17, 1894. D. A. B. 



Snyder : Richfield, July 17, 1908. O. E. J. 



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



