OF WESTERN PENNSYLVANIA 



165 



Fayette 

 McKean 



Washington 



way, non-fenestrate, the segments and usually three cilia finely 

 papillose above and often exceeding the teeth; spores round, 

 yellowish-pellucid, finely papillose, about .028-030 mm. ; dioi- 

 cous ; antheridial flower terminal-discoid ; mature in May. 



On rocks and soil in swamps and moist woods, Asia, Eu- 

 rope, and in North America through southern Canada south 

 to Georgia, Louisiana, Missouri, Montana, and California. 

 Crawford : On rotten stump in swampy woods, 



Linesville, June 12, 1907. O. E. J. 

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

 J. and G. K. J. (Figured). 

 Langmade, May 29, 1898, and Bolivar 

 Run, September 11, 1898. D. A. B. (Fig- 

 ured, as to fruit). 



Washington, I^inn and Simonton. (Por- 

 ter's Catalogue). 

 Westmoreland: "Rachelwood," New Florence, September 

 8-11, 1907. O. E. J. 



Sb. Mnium affine var. rugicum (Laurar) Bryologia Europasa. 



(Astrophylluin rugicum Lindberg). 



(Plate XXII) 



Darker green than true affine, almost blackish : stems short, 

 usually simple ; leaves oblong to broadly oval or sub-orbicular, the 

 apex blunt and rounded with an apiculation or almost entire, the 

 margin little or not at all serrate: capsule much as in affine var. 

 ciliare but usually smaller. The leaves often very closely resemble 

 those of M. rostratiim but Grout says the leaf-cells have thinner 

 walls in rugicum and also radiate in more or less definite series 

 from the costa, while in rosfratuiii the thick-walled cells are ir- 

 regularly arranged, or at least not in radiating series. 



In cool, shaded ravines and swamps ; Europe, and, in North 

 America, from Greenland to Alaska and locally south to 

 Louisiana and Colorado. 



Allegheny : Power's Run, April 18, 1906, and June 



17, 1909, O. E. J.; Wildwood Hollow, 

 ]\Iarch 29, 1908, and Coraopolis, Septem- 

 ber 14, 1905. O. E. J. and G. E. K. All 

 sterile. 

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



Sterile. 

 Fayette : Cheat Plaven, September 3-6, 1910. O. 



E. J. and G. K.J. (Figured). Ohio Pyle, 

 September 1-3, 1907. O. E. J. and G. K. 

 J. (Both sterile.) 



