Cladonia, Hoifm. 
0. cristatella, Tuck. McCall’s Ferry; Cone wage, on dead wood and on the 
ground. 
C. fimbriata (L.) Fr. Safe Harbor; Mt. Hope, on the ground. 
C. furcata (Huds.) Fr. Conewago, on the ground. 
C. furcata (Huds.) Fr., var. raceiUOSa, Floerk. Mt Hope, on the ground — Small. 
0. gracilis (L.) Nyl. Safe Harbor — Small; Conewago; McCall’s Ferry on 
the ground. 
C. gracilis (L.) var. vertictilata, Fr. Safe Harbor, on the ground. 
0. Mitrula, Tuck. Safe Harbor, on the ground. 
C. pyxidata (L.) Fr. Near Lancaster — Small; Safe Harbor, on the ground; 
Conewago, on rocks ; McCall’s Ferry, on rocks ; Mt. Hope, on rocks. 
C. rangiferina (L.) Hoffm. Conewago ; McCall’s Ferry, on the ground. 
C. Symphicarpa, Fr. Safe Harbor, on the ground. 
C. SQ.uainosa, Hoffm. McCall’s Ferry, on the ground. 
0. uncialis (C.) Fr. McCall’s Ferry, on the ground. 
LEOIDE^. 
Bseomyces, Pers. 
B. roseus, Pers. Safe Harbor, McCall’s Ferry, on the ground. 
Biatoria, Fries. 
B. varians (Ach.) Tuck. McCall’s Ferry, on Robinia Pseudacacia. 
Lecidea, Ach. 
L. Contigua, Fr? McCall’s Ferry, on stones. 
Buellia, De Not. 
B. parasema (Ach.) Th. Fr. Conewago, on Acer rubrtim. 
OPHEGRAPHE.®. 
Ophegrapha, Humb. 
0. vulgata (Ach.) Nyl. Cedar Hill, on Os try a Virginica. 
Graphis, Ach. 
G. dendritica, Ach. Cedar Hill, on oak trees. 
G. scripta, Ach. Conewago, on Ailanthus ; McCall’s Ferry, on Robinia 
Pseudacacia. 
ARTHONIEAE. 
Arthonia, Ach. 
A. lecidella, Nyl. Cedar Hill, on Celtis occidentalis ; Conewago, on Acer 
riibrum. 
A spectabilis, Fl. McCall’s Ferry. 
CALIOIE^. 
Calicium, Pers. 
C. byssaceum, Fr. McCall’s Ferry, on Pinus pungens. 
ENDOCARPE^. 
Endocarpon, Hedw. 
E. miniatum (L.) Schmr. Mill Creek, Little Chiquesalunga, on limestone 
rocks ; Safe Harbor, on Eozoic rocks. 
E. miniatum (L.) Schger., var. aquaticum, Schaer. Safe Harbor, on wet rocks. 
VERRUCARIE.®. 
Sagedia, Mass. 
S. OXyspora (Nyl.) Tuck. Cedar Flill, on Acer saccharum. 
