Peltiphylinm; 68, 7r. 
Pentstemon, 545. 
Perichaena, 313. 
Peridermium, 348, 400, 401, 402, 403, 404, 470. 
Peridiscus, 115. 
Perilla, 296. 
Peronospora, 6s. 
Persea, 46, 100, 207, 209. 
Pertusaria, 9, 380. 
Pestalozzia, 114, 209, 294, 544. 
Petalosteira, 72. 
Petalostemum, 118, 119, 120, 121, 122, 
eer rag 65. 
eyssonellia, 5. 
Peziza, 558, 420, 468, 527. 
Phacelia, 256, 379. 
Phascum, 111, 214. 
Se: 257 
hegopteris, » 453- 
Philonotis, 2 4 484, 485. 
Phieum, 358. 
Pholicta, 414, 468 
A, 414, 468, 
Pho 
Pho: 
eecpa 459» 462, 543. 
Phymatodes, 450, 
Physalis, 380. 
ilocarpus, 427. 
Pilopogon, 476, 
Pilotrichella, 495, 496. 
Pinus, 155, 328, 351, 356, 
ata 522, 503, 546, 547. 
> le 
Pityoxylon, 251, 327. 
Placodium, 9. 
Plagiochila, 255. 
Plagiothecium, 65. 
Fiantago, 59» 106, 358, 366. 
us : 
492, 403, 404, 405, 428, 
Pleuridium, 214. 
Pleuroclada, 382, 383. 
» 440. 
um, 292, 
Polygonella, 348, 40, 407, 408, 469. 
Pe um, 157, 276, 407» 420. es 
+ 359 449» 453, 463. 
Polyporus, 114, 326, 418, 419, 468, 
mia, 2, 462. 
4 
123, 124, 125. 
ae 405, 406 v 
x 
Populus, 32, 218, 294. 
Porcelia, 236, 238, 240. 
Porella, 381. 
Porophyllum, 546. 
Porotrichum, 496. 
Porteranthus, 424. 
Portulaca, 126, 127, 258, 
Posoqueria, 221. 
Potamogeton, 28, 373, 505. i: 
Potentilla, 244, 245, 246, 247, 248,.259, 260, “261, 
262, 263, 264, 265, 292, 301, 302, 303» 30451305, 
306, 328, 354, 358, 380, 394, 395, 39019397, 398, 
399» 4292 430 431, 432, 433, 434, 435,,40818547- 
Pringleochloa, 222. 
Prionodon, 494. 
Prosopsis, 37, 422. 
Prunus, 53, 220, 348. 
Psathya, 66, 413. 
Psathyrella, 31, 417, 418, 468. 
Pseudoleskea, 498. 
Pseudophacidium, 114. 
Pseudotsuga, 46s. 
Pseudovalsa, 55, 56. 
Psilocybe, 415, 416. 
Psoralea, 117, 118, 120, 124, 217,427. 
Pterigynan TUM, 225, 227, 231. 
Pteris, 56, 453. 
Pterogonium, 111. 
Pterostemon, 165. 
Ptilidium, 383. 
Ptilota, 461, 543. 
uccinia, 114, 257, 326. 
4 
Punctaria, 4. ‘ 
Pylaisia, 61, 224, 228, 230, 231. 
Pylaisiella, 224, 228, 229, 230, 231. 
Pyrenopeziza, 291. 
Pyrrocoma, 65, 2g. 
Pyrus, 206, 326. 
Pyxidanthera, 76. : 
'yxine, 8. 
Quercus, 51, 221, 322, 323, 352, 465, 543- 
Rachidospermum, 
Racomitri Rice 2 
omitrium, 327, 477, 478. 
Radula, 98x. 
Ralpia, 1, 4. 
Ramalina, 440. 
Ranunculus, 156, 220, 379» 424. 
Raphidostegium, 159- 
Rauia, 82. 
Ravenelia, 114. 
Remiria, 163. 
Reseda, 251 
Reticul: 
, 
Rhytiglossa, 410, 
Rhytisma, 257- 
one 59, 217, 295, 428, 
Psd 
R 27, 153, 2 257,427. 
Rell 3 19 9%, 7 
, (ote 
2 412,413, 468. es 
