266 A MANUAL OF MOSSES 



carinately split, rising from a basal membrane about two-fifths 

 as high, the cilia 1 (sometimes 2 or 3), as long as segments, 

 slender, nodose to appendiculate ; annulus 2-3-seriate ; spores 

 papillose, when mature brownish or yellowish, medium-walled, 

 about .014-.018 mm., mature in spring: autoicous. 



On bases and roots of trees, decaying logs, soil, rocks, etc.. 

 in moist woods ; cosmopolitan ; in North America occurring 

 from the Arctic regions to the Gulf of Mexico. Fairly common 

 in our region. 



Allegheny : Wildwood Road Hollow, June 11, 1908, 



on base of white oak, Guyasuta Hollow, 

 October 25, 1908, and Douthett, Decem- 

 ber 29, 1908. O. E. J. 



Beaver : Beaver Falls, May 14, 1907, Crider's Cor- 



ners, December 29, 1908. O. E. J. 

 Cambria Lloydsville, July 22, 1908. O. E. J. 



Crawford Linesville, May 12, 1908. O. E. I. 



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



Fayette Meadow Run Valley, four miles south of 



Ohio Pyle, September 1-3, 1906. O. E. J. 

 and G. K. J. (Figured). 



Westmoreland : Slope of Chestnut Ridge above Hillside, 



September 16-17, 1909. O. E. J. and 

 G. K. J. t 



2. Amblystegium varium (Hedwig) Lindberg. 

 (Leskea vana Hedwig; Stereodon I'arius Mitten; Hvpnitm dcbile 

 Bridel). 



(Plate XXXVII) 



More or less loosely cespitose, green to light-green above, 

 darker below, the stems and branches similar but larger than 

 in A. scrpcns; leaves rather close together, erect- to widely- 

 spreading, the stem-leaves ovate-acuminate, the largest about 

 1-1.5 mm.XO.5-0.7 mm., usually long-acuminate, somewhat 

 concave, the margins entire or very slightly denticulate, plane, 

 the base very slightly decurrent ; branch-leaves similar but 

 smaller and more lance-ovate, usually about 0.6-0.8x0.3-0.4 

 mm. ; costa strong, more or less colored, usually yellowish or 

 brownish, reaching usually into the acumen ; median leaf- 

 cells rhomboid-hexagonal, usually about 2-4:1, somew r hat in- 

 crassate, rather regularly arranged, the basal larger and more 

 incrassate, sometimes yellowish, short-rectangular, the basal 

 marginal distinctly quadrate ; inner perichxtial leaves slender- 

 ly lance-triangular, about 1.6 mm. long; seta reddish, slender, 

 dextrorse, varying from 1-2 cm. in length; capsule reddish- 

 yellow, about 4-6:1, cylindric, arcuate, the urn about 1.3 mm. 

 long, rather smooth, even when dry and empty; annulus 2-3- 

 seriate; peristome typically hypnaceous, similar to that of 



