OF WESTERN' PEXNSYLVAXIA 137 



Fayette : Ohio Pyle, June 14, 1908. O. E. J. and 



September 1-3, 1906, and Cheat Haven, 

 Seotember 3-6. 1910. O. E. J. and 

 G. K. J. 



Greene : ^^■aynesburg, May 30, 1904. O. E. J. 



Huntingdon : I'.irmingham, May 17, 1904. O. E. J. 



Lawrence : Xew Castle, April 28, 1907. Miss Susan 



Gageby. 



Mercer : Houston Junction, July 12, 1902. T. A. S. 



Somerset : Ursina, May 12, 1905. O. E. J. 



A^'ashington : Finleyville, July 2, 1904. G. E. K. ; Char- 

 leroi, April 24, 1908. O. E. J. 



A\'estmoreland : Ligonier to Donegal, June 23, 1904. O. E. 

 J. (Figured) ; New Florence, September 

 8-11, 1907. O. E. J.; Saunders Station, 

 June 21, 1907. O. E. J. and G. K. J. 



Family XHI. SCHISTOSTEGACBAB. 



This family consists of one genus only, the characters be- 

 ing as follows : 



1. SCHISTOSTEGA. Mohr. 



Dioicous : inflorescences gemmiform, terminal, paraphyses 

 none: minute and slender mosses in holes in earth, in caves, 

 etc. : annual, gregariovts on an abundant persistent protonema, 

 which is more or less luminous by reflected light ; sterile stems 

 fiom the middle upwards with distichous, basally confluent 

 leaves ; fertile stems with a terminal 5-seriate tuft of leaves ; 

 leaves unistratose, ecostate ; cells prosenchymatous, lax-rhom- 

 bic, sparsely chlorophyllose : seta thin, erect, almost hyaline ; 

 capsule minute, erect, symmetric, globose, without stomata, 

 annulus, or peristome ; operculum small, convex ; calyptra very 

 small and fugacious, mitrate, covering only the operculum, 

 smooth and naked ; propagation often by brood-bodies on the 

 protonema. 



One species only, in crevices and caves in non-calcareous 

 districts, in Europe, and, in North America, in New York and 

 Ontario, Rocky Mountains, British Columbia, Thompson's 

 Ledges, Ohio, and White Mountains. 



1. Schistostega pennata [Hedwig] Hooker and Taylor. 

 (Gymnostoinuiii pennatum Hedwig, Schistostega osmnndacca 

 Mohr.) 

 With characters as given for the genus. 



Family XIV. BRYACllAE. 

 Dioicous, autoicous, paroicous, or synoicous, sometimes 

 heteroicous; antheridial inflorescences with paraphyses; 



