—103— 
20. Cladonia didyma (Fee) Wain. Men. Clad. Univ. 1: 137. 1887. One specimen 
on old wood on moss, Ohio Pyle, Fayette Co., O. E. & G. K. Jennings. 
21. Cladonia pulchella Schwein. One specimen only in the collections: On old 
wood together with mosses, Morris farm, Ohio Pyle, Fayette Co., O. E. 
& Grace K. Jennings, Sept. 1-3, 1907. Determined by Mr. G. K. Merrill 
who indicated on the label his belief that this species belongs, as a variety, 
to C. didyma. 
22. Cladonia fur cata (Hud.) Schrad., Spic. Fl. Germ. 107. 1794. Commonly 
occurring on rich soil and with mosses, more rarely on clay and sandy 
soil. The specimens are from several counties, namely: Washington, 
Armstrong, Butler, Allegheny, Center, Clinton, and Lawrence. 
23. Cladonia furcata racemosa (Hoffm.) Flk., Clad. Comm. 152. 1826. Common- 
ly on humus and with mosses, sometimes with C. furcata, as in the speci- 
men from Tussey Mt., near Shingletown, Center Co., July 15, 1909, O. 
E. Jennings; also specimens from Carnot, Allegheny Co., J. A. Shafer 
1888-89, and Pymatuning Swamp, Linesville. Crawford Co., May 18, 
1905, O. E. Jennings. 
24. Cladonia furcata pinnata (Flk.) Wain., Act. Soc. Faun. Fl. Fenn. 4: 332. 
1887. Stoops Ferry, Allegheny Co., Oct. 7, 1905, O. E. Jennings and G. 
E. Kinzer; Idlewild, Westmoreland Co., Sept. 24, 1907, O. E. Jennings: 
and five different collections from Fayette County. 
25. Cladonia squamosa denticollis (Hoffm.) Flk.; (Scop.) Hoffm. Deutsch. Fl. 
2: 125. 1796. Old wood with C. cristatella, Somerset Co., D. R. Sumstine. 
Aug. 8, 1906. 
26. Cladonia squamosa squamosissima Flk. Common on dead wood and humus. 
Our specimens come from Somerset, Westmoreland and Fayette Counties. 
Sometimes it is difficult to distinguish between this and C cristatella 
vestita, especially if the specimens are infertile. Determined by Mr. 
G. K. Merrill. 
27. Cladonia caespiticia (Pers.) Flk., Clad. Comm. 8. 1828. Occurring with a 
moss on soil, Ohio Pyle, Fayette Co., Sept. 1-6, 1906, O. E. & G. K. 
Jennings; and with C. cristatella, Pymatuning Swamp, Linesville, Craw- 
ford Co., June 11-12, 1907, O. E. Jennings. 
28. Cladonia delicata (Ach.) Flk., Clad. Comm. 7. 1828. One specimen found 
on Birch tree. Keystone, Somerset Co., Oct. 9, 1904, O. E. Jennings. 
29. Cladonia turgida Hoffm., Deutsch. Fl. 2: 127. 1795. One infertile specimen 
on clay soil, from Morris Farm, Ohio Pyle, Fayette Co., O. E. & G. K. 
Jennings, Sept. 1-3, 1906. 
30. Cladonia mitrula Tuck., Darl. Fl. Cestr. ed. 3: 444. 1853. One specimen 
from the sand plain of Presque Isle, Erie Co., June 9-1 1, 1905, O. E. 
Jennings. 
31. Cladonia cariosa (Ach.) Spreng., Syst. Veg. 4: 272. 1827. On soil. Reported; 
from Nixon Station, Butler Co., and Wildwood, Allegheny Co., Aug. 19,, 
19 19, Wm. Millward. 
