— io6 — 
54. Peltigera canina membranacea Ach., Syn. Lich. Univ. 518. 18 10. There 
are two counties represented: At the base of a stump in Pymatuning 
Swamp, Linesville, Crawford Co., May lo-ii, 1906, and June 11-12, 
1907, O. E. Jennings; and on earth, with mosses, Ohio Pyle, Fayette 
Co., O. E. Jennings, May 12, 1905. 
55. Peltigera spuria DC, Fl. Franc. 2: 406, 1805. A single specimen on soil 
from the Pymatuning Swamp, Hartstown, Crawford Co., July 19, 1906,, 
D. R. Sumstine. 
56. Lecanora pallida (Schreb.) Schaer., Enum. Lich. Em. 78. 1850. On trees. 
Our one specimen comes from Somerset, Somerset Co., collected by D. 
R. Sumstine, Aug. 8, 1906. 
57. Lecanora subfusca (L.) Ach., Lich. Univ. 393. 1810. A single specimen 
from Ohio Pyle, Fayette Co., June 18, 1905, O. E. Jennings and G. E. 
Kinzer. It was found on Hicoria alba together with Lecidea disciformis 
Nyl. 
58. 'Lecanora varia (Hoffm.) Ach., Lichen. Univ. 377. 1810. On trunk of Finns 
Strobus, Presque Isle, Erie Co., May 8-9, 1906, O. E. Jennings. 
59. Lecanora gibbosa (Ach.) Nyl., Not. Saellsk. Faun. & Fl. Fenn. Foehr. 137. 
1866. On sandstone, on hillside. Fern Hollow, Pittsburgh, Allegheny 
Co., Nov, 25, 1921, G. I. Giardini. 
60. Parmelia perlata (L.) Ach., Meth. Lich. 216. 1803. On humus, Nixon 
Station, Butler Co., Wm. Millward, Feb. 3, 1917; Ohio Pyle, Fayette 
Co. O. E. and G. K. Jennings, Sept. 1-3, 1906.; Pymatuning Swamp, 
Crawford Co., May 18, 1905, O. E. Jennings. 
61. Parmelia perforata hypotropa Nyl., Syn. Meth. Lich. 1: 378. 1859. A single 
specimen from Nixon Station, Butler Co., on rocks, Wm. Millward, 
Feb. 3, 1917. 
62. Parmelia dubia (Wulf.) Schaer., Enum. Lich. 45. 1850. Commonly on trees. 
It was found on Quercus velutina on Presque Isle, Erie Co., June 9-1 1, 
1905, O. E. Jennings, and on different trees in Allegheny County. 
63. Parmelia rudecta Ach., Syn. Meth. Lich. 197. 1814. Usually on trees, 
rarely on dead wood and mosses. On Quercus velutina, Presque Isle, 
Erie County, Aug. 26, 1905, O. E. Jennings; on Betula lenta, in Pymatun- 
ing Swamp, Linesville, Crawford Co., May 18, 1905, O. E. Jennings; 
on Robinia, Ohio Pyle, Fayette Co., Sept. 1-3, 1906, O. E. & G. K. Jenn- 
ings; also represented by various specimens from Allegheny, Butler, and 
Westmoreland counties. 
64. Parmelia saxatilis (L.) Ach., Meth. 204. 1803. On Betula lenta, Pymatuning 
Swamp, Linesville, Crawford Co., May 18, 1905, O. E. Jennings; growing 
mixed with Ramalina caperata, Ohio Pyle, Fayette Co., Sept. 1-3, 1906, 
O. E. & Grace K. Jennings. 
65. Parmelia sulcata Tayl., Mack. Fl. Hiber. 2: 145. 1865. Commonly on 
bark, rarely on earth. Somerset, Somerset Co., Aug. 8, 1906, D. R. 
Sumstine; and Wolf Creek, near Slippery Rock, Butler Co., S. H. Williams, 
