INDEX OF GENERA. 



3 J 5 



Prunus, 30 

 Psathyra, 256 

 Psathyrella, 257 

 Pseudoleskea, 191 

 Pscudombrophila, 2S3, 

 Pseudopeziza, 2SS 

 Psilocybe, 256 

 Pteris, 131 



Pterygophyllum, 190 

 Ptychomitrium, 174 

 Puccinia, 272 

 Pulicaria, 56 

 Pvrola, 69 

 Pyrus, 39 

 Pythium, 295 



Quaternaria, 277 

 Quercus, 96 



Radula, 205 

 Radulum, 268 

 Kamulina. 220 

 Ranunculus, 1 

 Raphanus, 11 

 Reseda, 11 

 Reticularia, 302 

 Rhabdoweisia, 164 

 Rhacomitrium, 173 

 Rhagadiolus, 306 

 Rhaphidium, 233 

 Rhinanthus, S2 

 Rhinotrichum, 297 

 Rhizopus, 294 

 Rhoicosphenia, 234 

 Rhopographis, 278 

 Rhynchospora, 116 

 Rhytisma, 293 

 Ribes, 41 

 Ricasolia, 221 

 Riccia, 214 

 Ricciocarpus, 214 

 Rosa, 37 

 Roya, 231 

 Rubus, 31 

 Rumex. 92 

 Ruscus, 108 

 Russula, 261 

 Ryparobius, 291 



Saccogyna, 212 

 Sagina, 17 

 Sag in a, 15 

 Sagittaria, 113 

 Salix, 97, 30S 

 Salvia, 85, 306 

 Sambucus, 51 

 Sanguisorba, 37 

 Sanicula, 45 

 Saponaria, 14 

 Sarcoscypha, 281 

 Saxifraga, 40 



Scabiosa, 53 

 Scandix, 48 

 Scapania, 208 

 Schinzia, 274 

 Schistostega, 181 

 Schizophyllum, 264 

 Schmitzomia, 293 

 Schollera, 68 

 Scilla, 109 

 Scirpus, 114 

 Scleroderma, 242 

 Scleroderris, 292 

 Sclerotinia, 285 

 Scolopendrium, 134 

 Scrophularia, 79 

 Scutellaria, 86 

 Sedum, 41 

 Selaginella, 144 

 Seligeria, 163 

 Sempervivum, 41 

 Senecio, 59 

 Sepedonium, 298 

 Sepultaria, 282 

 Setaria, 121 

 Sherardia, 52 

 Sieglingia, 124 

 Silene, 14, 305 

 Si nap is, 10 

 Sisymbrium, 8, 305 

 Sium, 46 

 Solarium, 77 

 Solenia, 267 

 Solidago, 54 

 Solorina, 221 

 Sonchus, 65 

 Sordaria, 276 

 Sparganium, in 

 Spathularia, 280 

 Spergula, iS 

 Sperguiariae, IS 

 Sphacelotheca, 274 

 Sphaerella, 275 

 Spheerella, 298 

 Spharia, 275, 276, 



278 

 Sphaerobolus, 241 

 Sphasrophoron, 216 

 Sphserospora, 285 

 Sphserostilbe, 278 

 Sphaerotheca, 275 

 Spharotheca, 296 

 Sphagnum, 151 

 Spinellus, 294 

 Spiraea, 31 

 •Spirogyra, 230 

 Spirotaenia, 231 

 Splachnum, 181 

 Sporodinia, 294 

 Sporormia, 277 

 Sporotrichum, 297 

 Squamaria, 224 



Stachybotrys, 298 

 Stachylidium, 298 

 Stachys, 86, 308 

 Statice, 306 

 Staurastrum, 232 

 Stauroneis, 234 

 Stcgia, 293 

 Stellaria, 16 

 Stemonitis, 301 

 Stereocaulon, 218 

 Stereum, 270 

 Stichococcus, 233 

 Sticta, 221 



Stictna, 221 



Stigeoclonium, 230 



Stigmatea, 275 



Stilbum, 299 



Strobilomyces, 265 



Stropharia, 255 



Stysanus, 300 



Surirella, 236 



Symphytum, 75 



Svnchvtrium, 294 



Synechococcus, 233 



Synedra, 235 



Syzygitcs, 294 



Tabellaria, 236 

 Tamus, 107 

 Tanacetum, 58 

 Tapesia, 289 

 Taraxacum, 65 

 Taxus, 99 

 Tetmemorus, 231 

 Tetracme, 305 

 Tetragonium, 233 

 Tetraphis, 156 

 Tetraspora, 233 

 Teucrium, 6g 

 Thalictrum, 1 

 Thamnidium, 294 

 Thelephora, 271 

 Thielavia, 275 



277, Thlaspi, n 



Thuidium, 191 

 Thymus, 85 



228 Tilia, 20 



Tilletia, 274 

 Tilmadoche, 301 

 Tortula, 175 

 Torula, 298 

 Tragopogon, 66 

 Trametes, 267 

 Tremella, 271 

 Trentepohlia, 230 

 Trichia, 302 

 Trichocolea, 205 

 Trichoderma, 296 

 Tricholoma, 243, 303 

 Trichostomum, 179 

 Trichothecium, 298 



