proboscidea Aoh. (Gyrophora) 325
proboscidea lurn. & Borr. (Gyrophora)
327
proboscidea Tayl. (Parmelia) 234
proboscidea Cromb. (Umbilicaria) 325
proboscideus Ach. (Lichen) 325
proboscideus Huds. (Lichen) 327
proboscideus E. Bot. t. 522 (Lichen)
327
prolixa Nyl. (Parmelia) 252
prominula Borr. (Lecidea) ii. 71
prominula Nyl. (Verrucaria) ii. 291
promiscens Nyl. (Lecidea) ii. 73
prosecha Leight. [Lecanora) 426
proseohoides Nyl. (Leoanora) 426
proseohoidiza Nyl. (Lecanora) 427
prosiliens Stirton (Opegr.) ii. 234
prosodea Ach. (Opegrapha) ii. 245
proteiformis Llass. (Biatora) 445
proteiformis Nyl. (Leoanora) 445
protrusa Pr. (Lecidea) ii. 49
proximella Nyl. (Melaspilea) ii. 228
proximella Nyl. (Arthonia) ii. 228
proximella Nyl. (Lccidea) ii. 228
prunastri Ach. (Evernia) 229
prunastri Linn. (Lichen) 229
pruinata Steudel (Arthonia) ii. 214,353
pyruinata Pers. (Pattellaria) ii. 214
pruinifera Nyl. (Lecanora) 355
pruinosa Ach. (Arthonia) ii. 214, 353
pruinosa Mudd (Biatorella) 488
pruinosa Chaub. (Lecanora) 355
pruinosa Nyl. (Leoanora) 487
pruinosa Sm. (Lecidea) 487
pruinosus Sm. (Lichen) 488
Psora Dicks. (Lichen) 317
psorellum Nyl. (Collema) 64
PSOEOMA Nyl. 349
psoromoides Hook. (Endoc.) ii. 344
psoromoides Wint. (Physalospora ?)
ii. 344
psoromoides Borr. (Verrucar.) ii. 344
psotina Leight. (Pannaria) 343
psotina Cromb. (Pannularia) 343
ptelseodes Nyl. (Mycoporum) ii. 349
PTERYGIUM Nyl. 33
PTYCHOGEAPHA Nyl. ii. 225
pubescens Gray (Cornicularia) 28
pubescens Nyl. (Ephebe) 28
pubescens Linn. (Lichen) 28
pubescens Huds. (Lichen) 257
pulchella Tuckerm. (Buellia) ii. 181
pulchella Schser. (Lecidea) ii. 181
pulchella Cromb. (Normand.) ii. 272
pulchella Borr. (Verrucaria) ii. 272
pulchellum Borr. (Endoc.) ii. 272
pulchollus Schrad. (Lichen) ii. 181
pnilicaris Ach. (Lecanora) 416
pulicaris Hoffm. (Lichen) ii. 239
pulicaris Pers. (Patellaria) 416
pullum, etc. Dill, (Lichenoides) 334
pullus Lightf. (Lichen) 310
pullus Dicks. (Lichen) 330
pulmonacea Ach. (Sticta) 271
pulmonaria Hoffm. (Lobaria) 271
pulmonaria Hook. (Sticta) 271
pulmonarius Linn. (Lichen) 271
pulmonarius etc. Dill. (Lichenoides)
296
pulmonarius saxatilis, etc. Dill.
(Lichenoides) ii. 11
pulmonarius terrestres, etc. Dill.
(Lichenoides, quod Lichen) ii. 270
pulmoneum reticulatum, etc. Dill.
(Lichenoides) 271
pulmoneum villosum, etc. Dill.
(Lichenoides) 270
pulposa Leight. (Verrucaria) ii. 295
pulposulum Nyl. (Collema) 46
pulposum Ach. (Collema) 45
pulposus Bernh. (Collema) 45
pulverea Mudd (Biatorina) ii. 123
pulverea Borr. (Lecidea) ii. 124
pulverulenta Mudd (Borrera) 305
pulverulenta Ach. (Graphis) ii. 251
pulverulenta Leight. (Graphis) ii.
256
pulverulenta Pers. (Opegr.) ii. 251
pulverulenta Sm. (Opegrapha) ii. 256
pulverulenta Gray (Parmelia) 305
pulverulenta Nyl. (Physcia) 305
pulverulenHis E. Bot. t. 2063 (Lichen)
m i
pulverulentus Schreb. (Lichen) 305
pulvinata Mudd (Bacidia) ii. 149
pulvinata Aoh. (Cenomyce) 165
pulvinata Tayl. (Lecidea) ii. 149
pulvinatum Nyl. (Leptogium) 70
pulvinatum Hoffm. (Collema) 71
pumita Gray (Lichina) 32
pumilis Huds. (Fucus) 32
punctatus Dicks. (Lichen) 410
punctatus E. Bot. t. 450 (Lichen) 479
punctella Nyl. (Arthonia) ii. 219
punctiformis Ach. (Arthonia) ii. 216
punctiformis A-aàà. (Arthonia) ii. 210,
349
punctiformis Arn. (Arthopyr.) ii. 317
pitnctiformis S. P. Gray (LejojMea)
ii. 317
punctiformis Ach. (Lichen) ii. 317
punctiformis Pars. (Verrucar.) ii. 317
punctilliformis Leight. (Arthonia) ii.
212
pungens Koerb. (Biatora) ii. 54
pungens Floerke (Cladonia) 153
pungens Ach. (Lichen) 153
pungens Leight. (Lecidea) ii. 54
purpurascens Hoffm. (Verrucaria) ii.
294
pusillum Floerke (Calicium) 93
pusillum Pledw, (Endocarpon) ii. 274
pusillum Tayl. (Endocarpon) ii. 270
pusillum Nyl. (Leptogium) 65
pustulata Gray (Gyrophora) 323
pustulata Nyl. (Pertusaria) 504
pmsiulata Ach. (Porina) 504
pustulata Hofim. (Umbilicaria) 323
pustiUatus Linn. (Lichen) 323
pustulosum etc. Dill. (Lichenoides) 323
pycnocarpa Koerb. (Lecidea) ii. 102
PYCNOTHELIA Duf. 124
pygmsea Ag. (Liohina) 32
pygmcea Bory (Borrera) 301
pygmoia Koerb. (Microthelia) ii. 343
pygmseum Koerb. (Tioothec.) ii. 343
pygmcBus Lightf. (Eucus) 32
pyracea Nyl. (Leoanora) 383
pyrenastrella Oliv. (Arthopyr.) ii. 317
PYRENIDIUM Nyl. 81
pyreniospora Nyl. (Lecanora) 401
pyrenophora Ach. (Verrucaria) ii. 297
pyrenophora Leight. (Verrucaria) ii.
299
pyrenophorum Koerb. (Thelidium)
ii. 297, 299
PYRENOPSIS Nyl. 23
pyrenopsoides Nyl. (Collema) 78
pyrenopsoidesiAjl. (Lecanora) 78
PYRENULA Aoh. ii. 340
pyxidata Hook. (Cenomyce) 129
pyxidata Fr. (Cladonia) 129
pyxidatum, etc. Dill. (Lichenoides) 140,
145
pyxidatus Linn. (Lichen) 129
pyxidatus Sm. (Scyphophorus) 129
quadricolor Hook. (Lecidea) ii. 25
quadricolor Dicks. (Lichen) ii. 25
querceti Nyl. (Lecidea) ii. 8
quercinum Pers. (Calicium) 92
quernea Aoh. (Lecidea) ii. 19
quernea Koerb. (Pyrrhospora) ii. 20
querneus Dicks. (Lichen) ii. 20
racemosa Hook. (Cenomyce) 152
racemosa Hoffm. (Cladonia) 152
racemosa Nyl. (Cladonia) 151
RACODIUM Pers. ii. 3
radiata Aoh. (Arthonia) ii. 215
radiata Tayl. (Cenomyce) 139
radiata Pers. (Opegrapha) ii. 215
radiatus Huds. (Lichen) 257
radiatus Schreb. (Lichen) 139
Ralfsii Cromb. (Lecanora) 393
Balfsii Salw. (Lecidea) 393
RAMALINA Ach. 186
rameum Schser. (Nephroma) 283
rameum Nyl. (Nephromium) 283
ramificans Nyl. (Graphis) ii. 248
ramulosum, etc. Dill. (Ooralloides) 172
rangiferina Hook. (Cenomyce) 174
rangiferina Gray (Cladonia) 174
rangiferina Leight. (Cladina) 174
rangiferina Nyl. (Cladina) 174, ii. 352
rangiferinus Linn. (Lichen) 174
rangiferinus alpestris Linn. (Lichen)
177
BAPHIOSPOPA Massal. ii. 149
recedens Nyl. (Leoanora) 469
recedens Tayl. (Lecidea) 469
recta Humb. (Opegrapha) ii. 250
recurva Hoffm. (Cladonia) 152
recurva Aoh. (Parmelia) 250
reddenda Stirt. (Parmelia) 245
reducta Stirt. (Pertusaria) 498
refellens Nyl. (Lecanora) 389
relicta Stirton (Lecidea) ii. 92
repanda Nyl. (Dirina) 491
repanda Fr. (Parmelia) 491
resinse Th. Fr. (Biatorella) ii. 108
resinæ Fr. (Lecidea) ii. 109
resinæ Fr. (Peziza) ii. 109
restricta Stirton (Lecidea) ii. 103
resupinata Gray (Nephroma) 283
resupinata Tayl. (Nephroma) 284
resiipinatus Huds. (Lichen) 284
resupinahis E. Bot. t. 305 (Lichen)
285