58 



A MANUAL OF MOSSKS 



rather inerassate, irregularly elongate-hexagonal or rectangu- 

 lar-oblong, two or three rows at the rim much smaller and 

 darker; spores smooth, rather thin-walled, yellowish-pellucid, 

 mature in May or June. 



Cosmopolitan on burnt-over ground, roadsides, vacant lots, 

 roofs, bare clay soil, etc. Very common in our 



region. 



Allegheny 



Beaver 

 Butler 



Cambria 

 Center 



Clinton 

 Crawford 



16, '1909, and 

 Matternville, 



i. 



b. E. F. 



Erie 



Fayette 

 Lawrence 



McKean : 



Somerset 



Washington 



Westmoreland 



About 20 different collections examined 

 from various localities. 

 Heaver, April, 1902. Miss Anna M. Deens. 

 Buffalo Creek, near Winfield junction, 

 A lay 26, 1906. O. E. ]. 

 Cresson, May 18, 1904. O. E. J. 

 Barrens, near Scotia. July 

 on I 'aid Eat/le Ridge, near 

 September 20, 1909." O. E. 

 Lock Haven, July 15, 1908. 

 Linesville, June 6, 1904. May 10-11. 1906. 

 Tune 11-12, 1907, and May"l2, 1908. O. 

 E. j. ; I Eartstown, May 29-31, 1909. O. E. 

 J. and G. K. J. 



On sand-plain, Prescjue Isle, May 15 and 

 June 10-11, 1905, and .May 8-9. (Figured) 

 and September 20-22, 1906. O. E. I. 

 < hio Pyle, June 14, 1908. O. E. J. 

 Graceland Cemetery, New Castle, Miss 

 Susan Gageby ; in gorge below Ellwood 

 City, June 26, 1909. O. E. T. 

 Langmade, April 26, 1896. D. A. B. 

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

 lianlin, Mav 21, 1907, and Charleroi, 

 April 24, 1908. O. E. J. 

 Hillside, May 19, 1906, and May 22, 1909, 

 "Shades," near Blackburn, June 13, 1908. 

 O. E. 



6. SELIGHRIA Bryologia Europaea. 



Autoicous: minute, gregarious, or cespitose, rupestral : 

 stem simple or branched at base, rarely with long sterile 

 shoots; leaves in 3 to 5 series, the lower minute and distant, 

 the upper abruptly larger and canaliculate-subulate from a con- 

 cave lanceolate base ; costa often stronger above the base ; alar 

 cells not differentiated : seta mostly erect, but little longer than 

 involucral leaves; capsule globose-pyriform, smooth; collurri 

 distinct ; annulus none ; peristome deeply inserted, or rarely 

 none ; when present, teeth broadly lanceolate, usually entire, 

 truncate or acute ; operculum obliquely rostrate ; calyptra cucul- 

 late. 



