GENERAL INDEX 



327 



Panaeolus campanulattis, gelatinous my- 

 celium, 101 

 „ „ heterothallic, 



171 

 ,, „ illustration, 134 



Panaeolus Sub-type, 63 

 Panus stypticus, hyphal fusions, 152, 154, 



169, 171 

 Pape, and a Coprinus on Beet seeds, 75 

 Paraphyses, as elastic elements in the 



hymenium, 28 

 Parasitism of mycelia, 165 

 Patchiness, phenomenon of, 248, 249 

 Paxillus involutus, fruit-body fixation, 



93-94 

 Periodicity in development of fruit- 

 bodies, 23-25, 49, 52 

 Petri dishes, examination of mycelia in, 

 203 

 ,, ,, small and large, 196-197 



Phaeophyceae, social organisation in, 140 

 Phanerogamia, no social organisation in, 

 139 

 „ nuclei in diploid phase, 



269 

 „ union of nuclei, 188 



„ union of roots, 139, 140, 



141 

 Pholiota mutahilis, rate of growth of 



mycelia, 199 

 Pholiota radicosa, fruit-body fixation, 94 

 Phragmidium speciosum, spore-bed of, 



283 

 Phragmidium violaceum, spore-bed of, 



282 

 Phycomycetes, and social organisation,^ 



152 

 PUeus-flesh, and fruit-body efficiency, 

 65-68 

 divided into rays, 40, 41 

 of Coprinus comatus, 73 

 sheath of, 40 

 volume of, 67 

 Pilobolus, drop-excretion from, 17 



„ and SjTicephalis, 152 

 Pilobolus longipes, and fumes of fresh 



manure, 9 

 ,, „ no social organisation 



in, 152 

 Pilocystidia, illustrations of, 15, 16, 17, 

 18,43 

 ,, of Coprinus curtus, 14-18 



,, of C. plicatilis, 43 



Plasmodesmae, 143 

 Plasmodium, aggregate, 146 



Plasmodium, compound, 147 



„ formation of, 146, 147 



Pleospora herbarum, hyphal fusions, 172 

 Pleurage anserina, bridging hyphae, 154 

 illustrations, 177, 178 

 ,, ,, sex of spores, 290 



,, „ social organisation, 



177-178 

 Pleurocystidia, autodigestion of, 54 



„ of Coprinus atramenta- 



rius, 45 

 „ of C. lagopus, 45 



„ of C. plicatilis, 45^6, 47 



Plicatilis Sub-type, description, 33-35 

 Pollock, J. B., culture medium of, 86 

 Polyporaceae, fixation of fruit-bodies, 



92-93 

 Polyporus squamosus, water excretion, 74 

 Polystigma rubrum, ascogonia of, 290 

 Pressure, upward, exerted by a stipe, 



117-120 

 Psalliota campestris, and Coprinus coma- 

 tus, 66-68 

 ,, „ and C. plicatilis, 55 



,,. „ fruit-body effici- 



ency, 65-68 

 ,, „ fruit-body fixation, 



93-94 

 ,, „ heUotropism, 125 



„ hjrphal fusions, 169 



„ illustration, 66 



„ „ rate of fall of spores, 



48 

 Psathyrella disseminata, and Coprinus 



curtus, 16 

 Psathyrella Sub-type, 63 

 Pseudorhiza, and fruit-body fixation, 94 

 ,, and the stipe-base, 1 12-113 



Pseudotsuga tazifolia, illustrations, 140, 



141 

 Pteridophyta, no social organisation in, 

 139 

 „ nuclei in diploid phase, 



269 

 ,, union of nuclei, 188 



Puccinia, species of, 283 

 Puccinia graminis, hyphal fusions, 283 

 ,, ,, illustration, 283 



,, „ sexual process, 281, 



286 

 Puccinia helianthi, sexual process, 281, 



286 

 Puccinia Malvacearum, homothallism of, 



286 

 Puccinia poarum, spore-bed of, 282 



