396 



peripherica Tayl. (Yerrucarid) ii. 344 

 periphericus Cromb. (Endo.) ii. 344 

 periplaoa Nyl. (Leoidea) ii. 90 

 perlata Ach. (Parmelia) 233 

 perlatus Linn. (Lichen) 233 

 perluta Nyl. [Lecidea) ii. 187 

 perlutum A. Zahlbr. (Rhizocarpon) 



ii. 187 

 perminuta Deakin {Verrucaria} ii. 335 

 perobsoura Nyl. (Leoidea) ii. 32 

 peronellum Turn. & Borr. {Calic.) 100 

 perpusillaZieight. {Verrucaria) ii. 343 

 perpusiUum Am. (Ticothec.) ii. 343 

 perpusillus Nyl. (Endococcus) ii. 343 

 persicina Koerb. (Sagedia) ii. 336 

 persimilis Nyl. (Lecidea) ii. 187 

 Persoonii Aoh. (Lichen) ii. 235 

 pertenuis Leight. (Verrticaria) ii. 336 

 pertusa Sohser. (Parmelia) 261 

 pertusa Hook. (Porina) 499 

 PERTUSARIA DC. 491 

 pertusus Linn. (Lichen) 499 

 pertusus Sohrank (Lichen) 261 

 perustula Nyl. (Lecidea) ii. 87 

 petrcea Aoh. (Lecidea) ii. 194 

 petrcea Tayl. (Lecidea) ii. 195 

 petraea Nyl. (Lithograpba) ii. 223 

 petrcea Dur. (Opegrapha) ii. 223 

 petraeum Del. (Chiodeoton) ii. 261 

 petrcBum Koerb. (Bhizocarpon) ii. 195 

 petrEBum Massal. (Rhizocarp.) ii. 194 

 petrceus Wulfen (Lichen) ii. 194 

 petriua Nyl. (Graphis) ii. 248 

 pezisoidea Aoh. (Lecidea) ii. 199 

 pezizoides Dioks. (Lichen) 338 

 pezizoides Weber (Lichen) 338 

 pezizoides Leight. (Pannaria) 338 

 pezizoideum Koerb. (Lopad.) ii. 199 

 phaoodes Koerb. (Bacidia) ii. 152 

 phacodes Leight. (Lecidea) ii. 152 

 phseenterodes Nyl. (Leoidea) ii. 66 

 phseooarpeUa Nyl. (Leoanora) 378 

 phaeooephalum Turn. & Borr. (Cali- 



cium) 88 

 phceocephalum Mudd (Gyphelium) 88 

 phcBocephalus Turn. (Lichen) 88 

 PH.S10GRAPH1S MueU. ii. 252 

 phaeoleuoodes Nyl. (Lecanora) 445 

 phceops Th. Fr. (Lecanora) ii. 20 

 phaeops Nyl. (Leoidea) ii. 20 

 phlogina Nyl. (Leoanora) 386 

 PHLYOTIS WaUr. 512 



phycopsis Aoh. (Rooeella) 182 

 phyUisceUa Nyl. (Pyrenopsis) 25 

 phyllisoina Nyl. (Leoidea) ii. 80 

 phylliscocarpa Nyl. (Lecidea) ii. 79 

 phyllodisoa Stirton (Leoidea) ii. 93 

 PHYSGIA Schreb. 294 

 physodes Linn. (Lichen) 258 

 physodes E. Bot. t. 126 (Lichen) 259, 



260 

 physodes Ach. (Parmelia) 258 

 physodes Tayl. (Parmelia) 259 

 physodes Gray (Physcia) 258 

 pioea Nyl. (Leoanora) 452 

 picila Massal. (Biatora) ii. 47 

 pioila Leight. (Lecidea) ii. 46 

 picta Tayl. (Lecidea) 384 

 pileatum Aoh. (Stereocaulon) 122 

 PILOPHORUS Pr. 114 

 pilularis Koerb. (Biatoriua) ii. 116 

 pilularis Leight. (Lecidea) ii. 116 

 pinastri Gray (Cetrarid) 225 

 pinastri Scop. (Lichen) 225 

 pinastri Nyl. (Platysma) 225 

 pineti Koerb. (Arthonia) ii. 207 

 pineti Massal. (Biatorina) ii. 113 

 pineti Ach. (Lecidea) ii. 113 

 pineti Schrad. (Lichen) ii. 113 

 pinguicula Massal. (Verrucar.) ii. 288 

 pinicola Borr. (Lecidea) ii. 169 

 pinicola Aoh. (Lichen) ii. 169 

 pinicola Sm. (Lichen) ii. 170 

 piniperda Koerb. (Lecanora) 435 

 pissodes Stirton (Leoidea) ii. 17 

 pituphloia Leight. (Verrucaria) ii. 306 

 pityrea Ploerke (Capitularia) 132 

 pityrea Ploerke (Cladonia) 132 

 pityrea Sm. (Parmelia) 308 

 pityrea Nyl. (Physcia) 308 

 pityreus Ach. (Lichen) 308 

 plaoodiellum Nyl. (Leptogium) 63 

 PLACODIUM Nyl. 357 

 plaoophyllus Ach. (Bseomyoes) 111 

 PLACOPSIS Nyl. 355 

 plana Nyl. (Lecidea) ii. 76 

 plana Lahm (Lecidella) ii. 76 

 platycarpa Ach. (Lecidea) ii. 68 

 PLATYGBAMMA Leight. ii. 258 

 PLATYGRAPHA Nyl. ii. 204 

 platyna Aoh. (Cetraria) 216 

 platypyrenia A. L. Sm. (Arthopyrenia) 



ii. 329 

 platypyrenia Nyl. (Verrucaria) ii. 329 



