OF WESTERN PENNSYLVANIA 2^1 



1. Campylium higpidulum (Bridel) Mitten. 



(Hypnum hispidithnn Bridel; Chrysohypniiiii hispiduluin Roth; 

 Stereodon hispidulus Mitten ; Atnblystcginm hispiduluin 

 Kindberg) . 



(Plate XLI) 



Slender, interlaced in bright green tufts more or less yel- 

 lowish below; stems creeping, radiculose, abundantly but ir- 

 regularly branching, the branchlets slender and erect or 

 ascending; leaves widely spreading to distinctly squarrose, 

 about 0.5-0.8 mm. long, triangular-cordate, abruptly acumi- 

 nate, the slender acumen about one-third to one-half as long 

 as the main body of the leaf, the leaf slightly concave, decur- 

 rent, sub-serrvilate all around, excavate at the base : costa 

 double and very short, or none; median leaf-cells about 3-6:1, 

 about .005-006 mm. wide, prosenchymatous, elongate-oblong 

 with blunt ends, the alar numerous, sub-rectangular to 

 quadrate, granulose, up to twice as wide as the median cells : 

 seta pale castaneous to yellow, about 1.5 cm. long, slender 

 dextrorse ; capsule small, oblong, more or less incurved, yel- 

 lowish-brown, wide-mouthed, the urn about 1.2-1.4 mm. long, 

 when dry furrowed and narrowed below the mouth ; annulus 

 uni-seriate ; lid convex-conic with an upturned apiculation ; 

 peristome normally hypnoid, the segments' slightly cleft and 

 almost equalled in length by the nodose to sub-appendiculate 

 cilia ; spores mature in summer, yellowish, medium-walled, 

 minutely papillose, about .011-014 mm. 



On the bases and roots of trees, on decaying wood, on 

 humus, etc., always near the ground in moist shaded places ; 

 in Europe, Asia, and, in North America, from North Carolina 

 and Missouri to Canada. Common in our region. 



Allegheny : Moon Township, April, 1902. J. A. S. ; 



Coraopolis, September 4, 1905. O. E. J. 

 and G. E. K. 



Cambria : T. P. James. (Porter's Catalogue). 



Center : Eda;e of pond at Scotia, September 20, 



1909. O.E.J. (Figured). 



Erie : Presque Isle, June 9-11, 1905. O. E. J. 



Indiana : T. P. James. (Porter's Catalogue). 



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



and G. K. J. 



McKean : Quintuple Ridge, November 26, 1896, 



Boli\ar Run, Decerhber 15, 1896, Septem- 

 ber 24, 1896, Langmade Hollow, all near 

 Bradford. D. A. B. 



