228 



Oricellarii, 5 

 Orseille, 5, 85 

 Osmotic action, 44 



pALISADE cells, 47 



Pannaria, 207 

 Pannaria lanuginosa, 208 

 Pannaria lurida, 208 

 Pannariaceae, 197 

 Paper, 5 

 Paraphyses, 63 

 Parasitism, 26, 31 

 Parmelia, 45, 132, 167 

 Parmelia parietina, 17, 21 

 Parmelia perforata, 89 

 Parmelia perlata, 169 

 Parmelia rudecta, 90 

 Parmeliaceae, 159 

 Patellariaceae, 98 

 Peltigera, n, 47, 209 

 Peltigera aphthosa, 23, 41, 55, 56, 58, 83 

 Peltigera canina, 10, 23, 210 

 Perfumes, 5 

 Persoon, C. H., n 

 Pertusaria, 5, 186, 218 

 Pertusaria communis, 33, 77, 187 

 Petiver, J., 7 

 Peziza confluens, 77 

 Pezizaceae, 98 

 Phacidiaceae, 98 

 Phthisis, 10 

 Phylloclades, 68 

 Physarum mucoroides, 33 

 Physcia, n, 156 

 Physcia speciosa, 158 

 Physcia stellaris, 61, 92 

 Physciaceae, 151 

 Physiology, 26, 40 

 Physodin, 22 

 Picroerythrin, 22 

 Pilophoron, 122 

 Pilophoron cereolus, 123 

 Pilophoron robustus, 55 

 Placodium, 8, n, 152, 154, 218 

 Placodium elegans, 155 

 Plagiotropism, 72 

 Platysma, 8 

 Pleurococcus, 21, 69 

 Pleurococcus punctiformis, 39 

 Pleurococcus vulgaris, 24, 100 

 Plinius, 3, 5 



Plukenet, L., 7 



Podetia, 82, 105, 119, 126 



Pollen, 12 



Pollen dust, 9 



Polychidium, 204 



Polychidium muscicolum, 205 



Polycoccus punctiformis, 101, 124 



Polyphylogeny, 29, 96 



Polyps, 14 



Poor trash, 9 



Porcher, P., 27 



Pores, 52, 53 



Porta, J. B. , 4 



Priestley, substance of, 16, 17 



Primary cortex, 53 



Primary thallus, 119, 122, 125 



Promycelium, 71 



Propagation, 87 



by soredia, 92 



vegetative, 93 



Propagative organs, 4, 62, 67 

 Propagines, 13 

 Proper exciple, 66 

 Protonema, of moss, 34 

 Protothallus, 71 

 Pseudocyphellae, 54 

 Pseudolichenes, 39, 217 

 Psora, 47, 133, 140 

 Psora Russellii, 141 

 Psoroma, 205 

 Psoroma hypnorum, 206 

 Pulling tension, 61 

 Pulveraria, 218 

 Pulvis antilyssus, 10 

 Pulvis Cyprius, 5 

 Purgative, 23 

 Pycnidia, 21, 32 

 Pyrenothea, 218 

 Pyrenomycetes, 99 

 Pyrenula, 15, 180 

 Pyrenula nitida, 181 

 Pyxidium, 8 

 Pyxine, 144, 155 

 Pyxine picta, 156 



AUININE, 17 



-pAMALINA, 172 



Ramalina calicaris, 173 

 Range, of lichens, 219 



