x^isT sfe:cie:s. 
USNEiE. 
Ramalina. Ach. 
R. calicaris (L-) Fr. Conewago, on Juniperus Virginiana. 
R. calicaris (L.) Fr., var, canaliculata, Fr. Mt. Hope. 
R. calicaris (L.) Fr., var. fastigata, Fr. Safe Harbor, on fences. 
R. calicaris (L.) Fr., var. fraxinea, Fr. Cedar Hill, on fences. 
Cetraria, Ach. 
C. ciliaris (Ach.) Tuck. McCall’s Ferry, on dead branches. 
C. lacunosa, Ach. Martic Forge — Porter. 
Usnea, Ach. 
U. harhata (L.) Fr. McCall’s Ferry, on oak trees. 
U. harhata (L.) Fr., var. ceratina, Schaer. Mt. Hope. 
U. harhata (L.) Fr., var. fiorida, Fr. Mt. Hope. 
U. harhata (L.) Fr., var. hirta, Fr. McCall’s Ferry, on oak trees. 
XJ. harhata (L.) Fr., var. ruhiginea, Michx. McCall’s Ferry, on oak trees. 
PARMELI^. 
Theloschistes, Norm. 
T. chrySOphthalmUS (L.) Norm. Safe Harbor, on Robinia Pseudacacta. 
T. concolor (Dicks.) Tuck. Conewago, on Robinia Pseudacacia. 
T. lychneus, Nyl. Conewago, on Robinia Pseudacacia. 
Parmelia, Ach. 
P. Borreri, Ach., var. reducta, Tuck. Safe Harbor, on fences — Small ; Cedar 
Hill, on fences ; Mill Creek, on walnut tree ; Conewago, on oak trees ; 
McCall’s Ferry, on rocks. 
P. Cetrata, Ach. Conewago, on oak trees; McCall’s Ferry, on Robinia Pseu- 
dacacia. 
P. caperata (L.) Ach. Conewago, on Juniperus Virginiana ; Cedar Hill, 
on fences ; McCall’s Ferry, on rocks. 
P. COnspersa (Ehrh.) Ach. Safe Harbor — Small: McCall’s Ferry. 
P. perforata (Jacq.) Ach. Conewago, on oak trees. 
P. perlata (L.) Ach. Mt. Hope. 
P. saxatilis (L.) Fr. Conewago, on rocks. 
P. tiliacea (Hoffm.) Floerke. Mt. Hope — Small. 
Physcia DO. 
P. aQ.uila (Ach.) Nyl., var. detonsa. Tuck. Conewago — Small; McCall’s b'erry. 
Safe Harbor, on rocks. 
P. astroidea (Fr.) Nyl. Safe Harbor — Small. 
P. COmOSa (Eschw.) Nyl. Cedar Hill, on Junipertis Virginiana — Porter. 
P. hypoleuca (Ach.) Tuck. Conewago, on Juniperus Virginiana . 
P. ohscura (Ehrh.) Nyl. Mill Creek, on walnut tree. 
P. pnlverulenta (Schreb.) Nyl. Safe Harbor, on fences. 
P. Stellaris (L.) Tuck. Safe Harbor, on fences; Cedar Hill, on Ulmus Ameri- 
cana ; Coiiewago, on Robinia Pseudacacia. 
P. speciosa (Wulf.) Nyl. Conewago, on Juniperus Virginiana. 
