188 A MANUAL OF MOSSES 



about 2.3-3 mm. long; calyptra pale, roughened towards apex, 

 covering about one-half to one-third of urn. 



Widely distributed throughout the North Temperate Zone 

 on earth, particularly partly shaded clay banks. Common in 

 our region. 



Allegheny : Power's Run, September 21, 1905, Schen- 



ley Park, October 30, 1905, and Darling- 

 ton Hollow, October 12, 1908. O. E. J.; 

 \Yildwood Road, March 29, 1907. O. E. 

 J. and G. K. J. 

 Clinton : Hyner Creek, above Hyner, July 15, 1908. 



i Fi"ured). O. E. J. 



Crawford : Lines ville,' May 10-11, 1906. O. E. T. 



Elk : Head of Little Mill Creek, March" 31, 



1910. A. B. Wallgren. 



Fayette : Ohio Pyle, May 13, 1905. O. E. J. ; Sep- 



tember 1-3, 1907. O. E. T. and G. K. T. 

 Mc-Kean : Langmade, May 29, 1898" D. A. B. 



la. Catharinaea undulata variety minor Weber and Mohr. 



(Plate XXVII) 



Differs from the species in having the stem, leaves and 

 sub-erect capsule shorter. 



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



(Figured). 

 Fayette : Ohio Pyle, May 30-31, 1908. O. E. J. 



Ib. Catharinaea undulata variety allegheniensis New Variety. 



(Plate XXVI) 



Similar to the species in general habit and appearance but 

 usually somewhat smaller and more slender : the lamellae 

 5-7 in number, usually 6, ranging from 4-7, usually 6, cells in 

 height, the costa and lamellae together occupying from one- 

 sixth to one-third of the width of the upper part of the leaf; 

 the upper leaf-cells about .016-.018 mm. in diameter. 



This variety is much more abundant in the Pittsburgh 

 district than is the species, evidently preferring habitats with 

 shales and sandstones such as those of the Carboniferous. 



Allegheny : From sixteen different collections of vari- 

 ous dates and localities, the type collec- 

 tion being Powers Run, Montrose, April 

 18, 1906.' O. E. J. (Figured). (De- 

 posited in the Pennsylvania Herbarium of 

 the Carnegie Museum.) 



Armstrong : Kittanning, September 24, 1904, and 



September 27, 1909. O. E. J. 



Beaver : Beaver Falls, May 11, 1907. O. E. J. 



Crawford : Linesville, May 12, 1908. O. E. J. 



