724 GENERIC INDEX 
Phlebogonium, 131, 132 Quamoclidion, 681, 686, 688 
Phlox, 643 Quercus, 76, 95, 96, 102, 103, 105, 106, 
Phlomis, 191, 194 | 108, 200, 203, 208 
Pholiota, 562 
Phragmidium, 230, 453 Radula, 440 
Phymatodes, 634 | Radulum, 440, 445, 447, 448 
Phyllactinia, 1, 2, 14, 15, 18, 101%, 189, | Ranunculus, 7, 14, 18, 158, 159, 182-184 
199, 200-208 | Rhabdosciadium, 182, 185 
Physalis, 182, 191 | Rhamnus, 432 
Physaria, 237 | Rhizopus, 170 
Phytophora, 649 Rhus, 102, 648 
Phtheirospermum, 89, 90 Ribes, 37, 94, 200-202 
Picea, 23, 27, 32, 449, 602 Riccia, 289 
Pilaea, I9g1 Richardia, 367 
Pinus, 26, 27, 31, 78, 84, 388, 450, 452, Riddellia, 297 
OIG Robinia, 182, 187, 452 
Pisum, 182, 657 Roripa, 235 
Pisolithes, 253 Rosa, 91, 303 
Pitcairnia, 697 Rottboellia, 228 
Pityoxylon, 639 Roulinia, 662-665, 667 
Placodes, 600 Rouliniella, 662-668 
Plagiogyria, 619 Rubus, 87, 182, 649 
Plasmopara, 649 Rumex, 227 
Platanus, 479 Russula, 70, 557 
Plantago, 89, 91, 165, 185, 191, 206, 405 | Ruta, 198 
_Plecosorus, 135 Rutstroemia, 462 
Plectania, 136, 143 
Plectrothrix, 457 Sagittaria, 215 
Pleocnemia, 129, 131, 133 Sagenia, 129, 131-133, 136 
Pleomassaria, 445, 455 Salix, 4, 10, 97 
-Pleurodon, 448 Salsola, 569, 570 
Pleurospermum, 182 
Pleurotus, 559 
Plicaria, 142 
 Pluteus, 559, 560 
Poa, 62, 195, 206, 469 
Salvia, 115, 116, 191, 194 
Sambucus, 108 
| Sarcodon, 447, 448 
| Sarcoscypha, 143, 144 
Sassafras, 479 
Podopeltis, 129, 131-133 Saussurea, 197, 198 
Podophacidium, 138, 141, 142, 144 Saxifraga, 89, 230, 302 
Podosphaera, 21, 83-85, g1 Scabiosa, 182, 214 
Polemonium, 305 
Polyangium, 252 
Polygonum, 304 Scleropoa, 469 
Polysaccum, 253 Sclerotinia, 462, 463 
_Polypodium, 121, 123, 124, 126, 129, 130~ | Scolecotrichum, 449 
Scleroderma, 451, 563 
Sclerodon, 445, 447, 448 
132, 134, 579, 622, 624, 629, 634 Scutellaria, 10, 27, 87, 194 
pings 45° 553, 554, 571, 599, 602, | Secotium, 450, 451 
604, Sedum, 182 
Polystichum, 126-129, 131, 133, 135, 584 | Selaginella, 621 
Polystictus, 571, S7m. Selliguea, 634 
Populus, 10, 97, 200, 479 Senecio, 89, 191 
Poria, 600 : Sequoia, 383, 386 
Potamogeton, 215 Shepherdia, 91 
la, 13, 77, 78, 85, 403 Sidalcea, 80, 81 
85, 303 Sitanion, 469, 470 
lectania, 459 Sistostrema, 436, 438-440, 448 
Sisymbrium, 182, 186, 238, 
Pteris, I31, 451, 623, 624, 627 Siaytachean: 699 coe 
ccinia, 3, 63, I10-114, 116, 227-231, Smelowskia, 239 
Smilacina, 463 
as : Smilax, 73, 702 
» 442, 446, 448 Solanum, 512 _ 
) » 200 sles Solidago, 1g1 
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