.NDEX. 805 
Petalostemon Micux......... 328  Phelipaea ludoviciana WALP 475 
—-alopecurvides Pers..... 380 Phemeranthus Rar........... 218 
——candidus Micrx.. tar 1329) ——teretifolius RAF........ 218 
-———Villosus NurtT........... 328 Philadelphieae LinpDL.. ..... 274 
——Virgatum NEES......... 329 Philipoea REUT....... ...... 475 
Petrocallis R. BR............. 263 Philoglossa BAILU............ 531 
Petrophytum Nurv...... .... 282 Phlebosporium JUNGH........ 317 
Petrosciadium BDGEW........ 394 Phiedineum SPACH........... 234 
Peucedanites HEER............ 390 Phloganthea Cav............. 433 
Peucedanoides Boiss.......... 390° Pilea TIN Noses eg ee a4 exceomieee 431 
Peucedanum LINN............. 390 Phlox aristata MICHX.......: 432 
—nudicaule (PURSH)....... 390 —~—canadensis SWEET...... 431 
Peucedanum TOURN.......... 390 —carnea SIMS............. 432 
Peyritscia FOURN........ 2... “68 ——cuspidata SCHEELE..... 432 
Pfeifferia BUCH............... 429 Phlox divaricata LINN......... 431 
PDACA LUNN viscera teers eda weet 323 — -glaberrima LINN,........ 432 
——canadensis MACM....... 325 Phlox glutinosa BUCKL....... 431 
——caryocarpa MAcM...... 326 = Phlox maculata LINN.......... 432 
——elongata Hook.... ..... 324 Phlox penduliflora Sw......... 422 
—— flexuosa Hook...1...... 324 Phlox pilosa LINN............. 432 
——gracilis MAcM.......... B25 —-pilosa forma albiflora..... 4382 
——hypoglottis MAcM...... 324 Phlox pyramidalis Su......... 432 
—lotiflora T. and@ ...... 323 —reflexa Sw............45. 432 
——parviflora NUTT.... .... 325 —revoluta AIK..........., 432 
——plattensis MAcM....... 325 Phragmites TRIN.......  ..... 78 
Phacedid JUSSs 065. Somseeeew + 435 Phragmites communis TRIN.. 73 
Phacelia fimbriata PursH.... 436 —graecus STEUD.......... 73 
Phacelia purshii BUCKL........ 436 Phragmites phragmites (LINN.). 7 
Phacocapnos BERNH.......... 254 Phragmites vulgaris BSP..... 73 
Phaecasium CAss............. 567 Phryma LINN................- 44 
Phaenixopus CAss........ .... 560 ——leptostachya LINN...... 442 
Phaenopus DC................ 000 Phylace NOR. .<:..:005 «¢esea5 338 
Phaenopyrum ROEM.......... 287 Phyllachneae BAILL.......... 494 
——coccinium ROEM........ 288 Phyllantheae AGH........... 340 
—subvillosum Roem...... 288 Phyllanthophora GRAY....... 360 
——wendlandii Rorm....... 288 Phyllodium Dgsvx........... 319 
Phalacroderis DC...........:. 6567 PhylludonSAuisp............. 147 
Phalacroloma CASs........... 525 ' Physalis LINN...... ....-.+0.- 456 
——obtusifolium Cass...... 526 —angulata LINN.......... 458 
——acutifolium Cass. ...... 527 ——grandiflora HOOK........ 458 
Phalacros WENZ.............. 287 Physalis hirsuta DUN......... 457 
Phalangiumesculentum Nutr 151 Physalis lanceolata MIcHx..... 456 
-——fraseri NUTT............ 151 + Physalis nyctaginea DuN..... 457 
Phalaris LINN sos. ec¢es844 ox 54 -—obscura var. viscido- 
Phalaris americana TorRR..... 55 pubescens MICHX ..... 457 
Phalaris arundinacea LINN.... 55 —pennsylvanica GRAY.... 456 
Phalaris erucaeformis LInN.. 172 Physalis philadelphica LAM.... 458 
—oryzoides LINN.......... 54 Physalis pruinosa LINN....... 457 
Phalerocarpus G. DON........ 407 -——pumila NUTT........... 456 
—serpyllifolius Don ..... 407 Physalis pubescens LINN....... 457 
Phasellus MOENCH............ 312 Physalis viscosa ELL.......... 457 
Phaseolus LINN........-+...-+ 312. Physalis virginiana MILL...... 457 
Phaseolus angulosus (MUHL.)... 312  Physalis viscosa GRAY........ 457 
Phaseolus diversifolius PERS. 312 Physaria NUTT............... 263 
—helvolus LINN.......... 312 —argentea MacM......... 263 
——macrostachys ELL...... 312 Physkium Lour.............. 46 
——monoicus HAT. and Wr. 315 —natans LOUR............ 46 
—— paniculatus MICHx..... 312 Physocarpa RAF.............. 281 
Phaseolus pauciflorus BENTH... 312 Physocarpos CADIBESS,........ 281 
Phaseolus perennis WALT.... 312 —-opulifolius RAF......... 281 
Phaseolus polystachyos (LINN.). 312 Physocarpum SPACH ......... 248 
Phaseolus tuberosus Hat and Physolepidium SCHRENE..... 256 
Rite eaneaahicae oy 315 Physostegia BENTH............ 446 
Phelipaea fasciculata SPRENG 476 —rirginiana (LINN.).....- 446 
