INDEX. 



345 



Parietinic acid, 91, 208. 

 Patellate apothecia, 61, 132, 264. 

 Peaty soils, Lichens growing on, 104. 

 Pedicellate apothecia, 62. 

 Peltate apothecia, 61, 121, 161. 

 Pendulous thallus, 122, 127, 147- 

 " Perelle d'Auvergne," 220. 

 Perfumery, use in, 92, 126, 149, 275. 



Perithecium, 60, 63, 287, 301, 305, 306, 307, 308 ; colour of, 63. 



Picturesque, Lichens as elements in the, 80. 



Pioneers of vegetation, use as, 78. 



Physico-chemical characters of the tissues, 111. 



Phthisis, use in, 137, 159. 



Plague, reputed specifics for the, 200. 



Podetium, morphology of, 37, 261, 264, 265, 275. 



Poisonous properties, alleged, 131, 175, 229. 



Position of Lichens in scale of vegetation, 22, 115. 



Potash, bitartrate of, in thallus, 155 ; in ash of Lichens (vide Analysis). 



" Poudre de Chypre," 92. 



Preservation of specimens for herbarium, rules for, 109, 



Progressive development theory, in relation to Lichen reproduction, 22. 



Propagos, or buds, reproduction by, 25. 



Protoplasm of spores, 147, 207, 208, 241, 242, 298, 300 ; of thecEe, 67, 70, 

 194, 257. 



Pruinose thallus or apothecia, 42, 173, 193, 214, 231, 256= 

 Pulmonary diseases, use in, 137, 183, 267, 269. 

 "Pulver-laf" of Scandinavia, 193. 



Pulverulent state of apothecia, 42, 260, 295, 308 ; of thallus, 41, 42, 57, 



191, 205, 215, 217, 242, 262, 267. 

 Pulverulent thallus, 34, 247. 



" Pulvis antilyssus," or " Pulvis contra rabiem," 83, 168 ; Purvis Cyprius, 92. 



