OF WESTERN PENNSYLVANIA 179 



Florida, in the cooler portiohs. Common but only occasional- 

 ly fruiting in our region. 



Allegheny : Flood-plain of Brush Creek, Douthett, 



April 26, 1908. O. E. J. and G. K. J. 



(Figured). 

 Armstrong : Face of dripping sandstone clifif, West 



Winfield, June 20, 1904. O. E. J. 

 Center : Matternville Gap, Bald Eagle Mt., July 



15, 1909. O. E. J. 

 Clinton : Flood-plain of Hyner Run, July 14, 1908. 



O.E.J. 

 Fayette : In crevices of rocky river-bed, Ohio Pyle, 



September 1-3, 1906. O. E. J. 

 Huntingdon : Roadside-ditch, Huntingdon, July 20, 



1908. O. E. J. 

 Indiana : Along Cush-Cushing Creek, near Grant, 



July 12, 1908. O. E. J. 

 Lycoming : Swampy flood-plain near \Yilliamsport, 



July 16, 1908. O. E. J. 

 McKean : Bradford, April 14, 1893, July 4, 1895, 



May 23 and July 7, 1897, and Quintuple, 



June 9, 1897. D. A. B. 

 Westmoreland: Greensburg, May 27, 1893. Miss Kath- 



erine Holmes. 

 3a. Philonotis fontana variety falcata Bridel. 

 Leaves falcate-secund ; branches hooked towards the apex. 

 Center : Matternville Gap, Bald Eagle Mt., July 



15, 1909. O. E. J. 



Family XIX. TIMMIACBAE. 



Dioicous or autoicous; robust, in more or less high, lax, 

 dull-green to yellowish-green tufts, brownish inside, with a 

 brown tomentum below : stem erect or procumbent, with cen- 

 tral strand, densely-leaved, simple or dichotomous ; leaves 8- 

 seriate, of uniform length, from a half-sheathing, non-decurrent 

 base spreading to recurved, elongate lance-linear, carinate; 

 lamina unistratose, channeled to concave, non-bordered, ser- 

 rate ; costa strong, percurrent, often dorsally toothed above, 

 with several median guides ; leaf-cells green, small, rounded to 

 4-6-sided, ventrally mamillate ; cells of the sheathing part with- 

 out chlorophyll, sometimes dorsally papillose, elongate-rectan- 

 gular to linear, narrow towards the margin: sporogonia soli- 

 tary; seta long, erect; capsule cernuous to almost pendent, 

 from a short collum oblong-oval, brown, not or but slightly 

 striate, when dry ribbed; annulus revoluble; peristome in- 

 serted back from the edge of the mouth, always double, the 

 inner as long as the outer, when dry the parts sharply bulged 

 outwards in the middle; teeth confluent at the base, broadly 



