62 



A MANUAL OF MOSSES 



Armstrong 



Beaver 



Center 



Crawford 

 Fayette 



Lawrence 

 Westmoreland 



Allegheny : More than fifty collections from various 



localities in the County have been ex- 

 amined. 



Kittanning, August 16, 1906. O. E. J. 

 Beaver Falls, May 14, 1907. O. E. J. 

 Bald Eagle Ridge near Matternville, Sep- 

 tember 20, 1909, and mountain slope near 

 Bear Meadows, September 21, 1909. O. 

 E.J. 



Linesville, May 12, 1908. O. E. J. ; Harts- 

 town, May 29-31, 1909. O. E. J. and G. 

 K.J. 



Ohio Pyle, September 1-3, 1906, Septem- 

 ber 1-3, 1907, and Cheat Haven, Septem- 

 ber 3-6, 1910. O. E. J. and G. K. J. ; Ohio 

 Pyle, September 10, 1905. O. E. J. and 

 G. E. K.; and May 30-31, 1908. O. E. J. 

 In gorge below Ellwood Cit)\ June 26, 

 1909. O.E.J. 



New Florence, Mellon's estate on Laurel 

 Hill Mts., September 8-11, 1907. (Fig- 

 ured), Hillside, May 23, 1908, and May 

 22, 1909, "Shades" near Blackburn, March 

 25, 1910. O. E. J. ; Laurelville, May 30- 

 31, 1903. J. A. S.; Hillside, at top of 

 Chestnut Ridge, September 16-17, 1909. 

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



3. Dicranella rufescens [Dickson] Schimper. 



(Plate VH) 

 Rather loosely cespitose, reddish- to yellowish-green : 

 stems erect, in our region generally very short, about 3 mm. 

 high, mostly simple; leaves few, linear-lanceolate, reaching 1.5 

 mm. long, gradually narrowed, minutely denticulate towards 

 apex, plane, erect-spreading or sometimes sub-secund ; costa 

 narrow, about one-seventh to one-sixth the width of the leaf- 

 base, percurrent; basal leaf-cells large, hyaline, smooth, thin- 

 walled, quadrate-rectangular to linear-rectangular, reaching 8 

 -10 times as long as wide, median cells shorter and smaller 

 but similar, the percurrent costa margined by cells similar to 

 the median : seta erect, red, about 3-5 mm. long, dextrorse 

 when dry; capsule globose-ovoid, erect, red, symmetrical, 

 smooth to slightly wrinkled when dry, the urn wide-mouthed 

 and more or less turbinate ; operculum obliquely conic-rostrate, 

 about as long as urn (0.5 mm.) ; calyptra cucullate, smooth, 

 yellowish-red, narrowly conic, about 0.8 mm. long; spores 

 globose, smooth, orange-pellucid, about .012-015 mm., ma- 

 ture in late summer or fall. 



