.NDEX. 



805 



Petalostemon MICHX 328 



alopecuroides PERS 330 



candidus MICHX 329 



villosus NUTT 328 



virgatum NEES 329 



Petrocallis R. BR 263 



Petrophy turn NUTT 282 



Petrosciadium EDGEW 394 



Peucedanites HEER 390 



Peucedanoides Boiss 390- 



Peucedanum LINN 390 



nudicauk (PURSH) 390 



Peucedanum TOURN 390 



Peyritscia FOURN -68 



Pfeifferia BUCH 429 



Phaca LINN 323 



canadensis MAcM 325 



caryocarpa MACM 326 



elongata HOOK 324 



flexuosa HOOK 324 



gracilis MAcM 325 



hypoglottis MAcM 324 



lotiflpra T. and G 323 



parviflora NUTT 325 



plattensis MAcM 325 



Phacelia Juss 435 



Phacelia fimbriata PURSH 436 



Phacelia purshii BUCKL 436 



Phacocapnos BERNH 254 



Phaecasium CASS 567 



PhaenixopusCAss 560 



Phaenopus DC 560 



Phaenopyrum ROEM 287 



cocci nium ROEM 288 



subvillosum ROEM 288 



wendlandii ROEM 288 



Phalacroderis DC 567 



Phalacroloma CASS 525 



obtusi folium OASS 526 



acutifolium CASS 527 



Phalacros WENZ 287 



PhalangiumesculentumNuTT 151 



fraseri NUTT 151 



Phalaris LINN 54 



Phalaris americana TORR 55 



Phalaris arundinacea LINN 55 



Phalaris erucaeformis LINN.. 72 



oryzoides LINN 54 



Phalerocarpus G. DON 407 



serpyllifolius DON 407 



PhasellusMoENCH 312 



Phaseolus LINN 312 



Phaseolus angulosus (MuHL.)... 312 



Phaseolus diversifonus PERS. 312 



helvolus LINN 312 



macrostachys ELL 312 



monoicus EAT. and WR. 315 



paniculatus MICHX 312 



Phaseolus pauciflorus BEN TH . . . 312 



Phaseolus perennis WALT. ... 312 



Phaseolus polystachyos (LiNN.). 312 

 Phaseolus tuberosus EAT and 



WR 315 



Phelipaea fasciculata SPRENG 476 



Phelipaea ludoviciana WALP 475 



Phemeranthus RAF 218 



teretifolius RAF 218 



Philadelphieae LINDL 274 



Philipoea REUT 475 



Philoglossa BAILL 531 



Phlebosporfum JUNGH 317 



Phledineum SPACH 234 



Phloganthea CAV 433 



Phlox LINN 431 



Phlox arista ta MICHX 432 



canadensis SWEET 431 



carnea SIMS 432 



cuspidata SCHEELE 432 



Phlox divaricata LINN 431 



glaberrima LINN 432 



Phlox glutinosa BUCKL. ...... 431 



Phlox maculata LINN 432 



Phlox penduliflora Sw 422 



Phlox pilosa LINN 432 



pilosa forma alliflora 432 



Phlox pyramidalis SM 432 



reflexaSw 432 



revoluta AIK 432 



Phragmites TRIN 73 



Phragmites communis TRIN. . 73 



graecus STEUD 73 



Phragmites phragmites (LiNN.). 73 



Phragmites vulgaris BSP 73 



Phryma LINN 442 



leptostachya LINN 442 



Phylace NOR 338 



Phyllach neae BAILL 494 



Phyllantheae AGH 340 



PhyJlanthophora GRAY 360 



Phyllodium DESVX 319 



Phyllodon SALISB . . . : 147 



Physalis LINN 456 



angulata LINN 458 



grand) : flora HOOK 458 



Physalis hirsuta DUN 457 



Physalis lanceolata MICHX 456 



Physalis nyctaginea DUN 457 



obscura var. v i s c 1 d o- 



pubescens MICHX 457 



pennsyl vanica GRAY 456 



Physalis philadelptiica LAM 458 



Physalis pruinosa LINN 457 



pumila NUTT 456 



Physalis pubescens LINN 457 



Physalis viscosa ELL 457 



Physalis virginiana MILL 457 



Physalis viscosa GRAY 457 



Physaria NUTT 263 



argentea MAcM 263 



Physkium LOUR 46 



natans LOUR 46 



Physocarpa RAF 281 



Physocarpos CAMBESS 281 



opulifolius RAF 281 



Physocarpum SPACH 248 



Physolepidium SCHRENK 256 



Physostegia BENTH 446 



-^ virginiana (LiNN . ) 446 



