124 A MANUAL OF MOSSES 



McKean : Rutherford, :\Iarch 6, 1893. D. A. B. 



(Figured). 



Washington : Linn and Simonton. (Porter's Cata- 

 logue). 



3. Ulota crispa [Linnseus] Bridel. 

 (Ulota nlophylla Brotherus ; Orthotrichum crispiiin Hedwig). 

 (Plate XVI) 

 Densely cespitose, yellowish-green above, darker below, 

 the tufts about 8 mm. high : stems sparingly branched, growing 

 perpendicular to the bark on which it is found, sometimes 

 decumbent at base; leaves straight and erect-spreading when 

 moist, when dry much crisped, narrowly lance-ovate to sharply 

 acute to acuminate at the apex, concave and more or less 

 carinate, often marginally revolute ; marginal basal leaf-cells 

 hyaline, the inner basal pellucid, linear, often somewhat 

 vermicular, the median ceils incrassate, rounded, bluntly 

 papillose, the apical cells smaller and less papillose; costa 

 strong, sub-percurrent ; seta and capsule together about 4 mm. 

 long, capsule ovate-globose when wet, about 1 mm. long, 

 tapering rather gradually into the neck and seta, when dry 

 somewhat constricted below the mouth, with the neck and seta 

 dextrorse, the costa brownish-pellucid ; annulus brown, 

 pellucid, of about 3 series of small, close-set, rounded, cells; 

 teeth triangular-lanceolate, united into 8 pairs, when dry re- 

 flexed, each pair confluent and cribrose at apex, often split 

 along the divisural below ; segments 8, consisting of two rows 

 of cells nearly up to the apex, a little shorter than the teeth ; 

 spores globose, about .023-026 mm., mature in summer. 



On trees in woods; Europe, Asia, Tasmania, Alaska, and 

 from Newfoundland to Georgia. Fairly common in our region. 

 Allegheny : On trunk of Black Oak, Keown, Novem- 

 ber 14, 1909. O. E. J. 

 Center : On black oaks. Bald Eagle Ridge, near 



Matternville, September 21, 1909; O. E. 

 J. (Figured). 

 Crawford : Pymatuning Swamp, Linesville, June 12, 



1906. O. E. J. 

 McKean : Langmade, Bradford, May 29. 1898. D. 



A. B. 



3a. Ulota crispa variety minus (Schwaegrichen) New Com- 

 bination. 

 {U. crispula Bruch). 



\'\'ith shorter stems and leaves than in the species and a 

 capsule which rather abruptly narrows into a long neck, and 

 with a sub-globose to oval urn, which, when dry and empty, 



