LIST OF LICHENS. 
Tribe I— PARMELIACEI. 
Family i._ U SNEEI. 
2. RAMALINA, Ach., D. Not. 
Ramalina calicaris (L.J, Fr., var. fraxinea, Fr. On rails, Beartown, 
July ii. 
R. calicaris (L.), Fr., var. C. canaliculata, Fr. On fences, Rein- 
hold’s, March 14. 
3. CETRARIA (Ach.), Fr. Mull. 
Cetraria Islandica (L.), Ach., var. b. Delisaei (Bor.). On ground, 
Reinhold’s, March 14. 
C. juniperina (L.), Ach., var. C. Pinastri, Ach. On pine trees, 
Dombach’s Pine Woods, May 22. 
5. USNEA (Dill), Ach. 
Usnea barbata (L.), Fr. On rocks, Fite’s Eddy, May, 1886. On 
trees, Reinhold’s, March 14. 
U. barbata, var. ceratina, Schaer. On trees, Beartown, May 28. 
U. barbata, Fr., var. rubiginea, Michx. On trees, Fite’s Eddy, June 
1. On rocks, Reinhold’s, September 3. 
U. angulata, Ach. On trees, Hopewell Forge, July 6. 
Family 2— P ARMELIEI. 
9. THELOSCHISTES, Norm, Emend. 
Theloschistes chrysophthalmus (L.), Norm. On locust trees, 
near Mountville, March 6. 
T. concolor, Dicks. On apple trees, Crow Hill, March 9. 
T. lychneus, Nyl. On trees, Crow Hill, March 9. 
