590 GENERAL INDEX OF LATIN GENERA AND SPECIES. Vou. ITI. 
Polygonum Populus Potamogeton Primula 
scandens I 674 occidentalis I 591 trichoides I 81 mistassinica 2 708 
setaceum 669 Sargentii 591 Tuckermant 81 veris 708 
tataricum 672 tremuloides 590 varians 78 | Prinos 
tenue 664 | Porteranthus 2 248 Vaseyi 83 see Ilex 2 486 
tomentosum 667 (Gillenia) “ latifolius 83 | Prionopsis 3 377 
triangulum 664 stipulatus 248 Zizi 79 (Aplopappus) 
virginianum 665 trifoliatus 248 zosteraefolius 81 ciliata 377 
viviparum 671 | PORTULACACEAE 2 35 | Potentilla 2 249 | Prosartes 
Zuccarinii 676 | Portulaca 2 39 Anserina 258 lanuginosa I 517 
Polymnia 3 458 grandiflora 41 argentea 253 trachycarpa 518 
canadensis 458 neglecta 40 arguta 263 | Proserpinaca 2 613 
“radiata 458 oleracea 39, 40 bipinnatifida 257 intermedia 613 
Uvedalia 458 pilosa 40 canadensis 23h palustris 613 
Polyotus 3 34 retusa 40 “pumila 251 pectinacea 613 
angustifolius 34 triangularis 35 canescens 254 pectinata 613 
POLY PODIACEAE I 10 | Portuna 2 689 caroliniana 251 | Prosopis 2 332 
Polypodium 1°35 floribunda 690 collina 253 glandulosa 333 
bulbiferum 14,5 | Potamogeton I 74 effusa 256 juliflora 333 
calcareum 24 alpinus 77 emarginata 255 | Prunella 4 115 
cristatum 19 americanus 79 frigida 255 (Brunella) 
dilatatum “21 amplifolius 76 fruticosa 262 laciniata 115 
Dryopteris 23 “ ovalifolius 76 inclinata 254 vulgaris 115 
Filix-foemina 30 angustifolius 79 Hippiana 256) Prunus 2 322 
Filix-mas 17, 21 “ methyensis 79 hirsuta 253 alleghaniensis 324 
fontanum 29 bipleuroides 80 intermedia 254 americana 323 
fragile 15 Claytonit 77 labradorica 253 angustifolia 324 
fragrans 19 compressus 81-3 leucocarpa 252 Avium 327 
hexagonopterum 23 confervoides 81 leucophylla 256 Besseyi 327 
imcanum 36 crispus 81 littoralis 257 cerasifera 325 
intermedium 22 dimorphus 86 maculata 254 Cerasus 327 
Lonchitis 16 diversifolius 85 millegrana 252 Chicasa 324 
marginale 20 epihydrus 97 minima 255 cuneata 326 
montanum 15 “vars, 85 monspeliensis 253-4 domestica 2 322, 326 
nove boracense 18 Faxoni 78 multifida 2 256 gracilis 325 
obtusum 14 filiformis I 86 nana 255 Gravesii 325 
Phegopteris 23 “ Macounti 86 nemoralis 250 hortulana 324 
polypodioides 36 “ occidentalis 86 Nicolletii 252 “ Mineri 324 
Robertianum 24 flabellatus 87 nivea 255 insititia 326 
spinulosum 21 fluitans cha norvegica 253 Mahaleb 328 
vulgare 35,6 foliosus 82 palustris 258 maritima 325 
Polypogon I 201 Friesii 83 paradoxa 252 mollis 323 
monspeliensis 201 gemmiparus 85 pectinata 257 nana 329 
Polypremum 2 731 gramineus ‘78 pennsylvanica 257 nigra 323 
procumbens 731 heterophyllus 78 “ strigosa 257 pennsylvanica 328 
Polypteris 3 507 “ vars. 78 pentandra 253 pumila 326 
callosa 507 Hillii 82 pilosa B54 serotina ~ 329 
Hookeriana 507 hybridus 85 procumbens 250 “ Smallii - 329 
Polystichum I 16 illinoensis 79 procumbens 261 sphaerocarpa 325 
acrostichoides 16 interior 86 pumila 251 virginiana 329 
“ Schweinitztt 16 interruptus 87 Ranunculus 254 Watsoni 324 
Braunii 17 lateralis 84 recta 254 | Psedera 2 510 
Lonchitis 16 lonchites 77 reptans 250 | Pseudacacia 
scopulinum 17 “ noveboracensis 77 rivalis 252-3 odorata 2 375 
Polytaenia 2 632 “ connecticutensis 79 Robbinsiana 255 | Pseudotaenidia 2 630 
Nuttallit 633 lucens 79 rubens 254 montana 631 
PoMACEAE 2 286 major 83 salisbrugensis 254 | Psilocarya I 346 
Pomaria marinus 86 simplex 251 nitens 347 
glandulosa 2 338 mysticus 80 strigosa Boy rynchosporoides 347 
PONTEDERIACEAE I 462 natans 74,5 sulphurea 254 scirpoides 346-7 
Pontederia 462 niagarensis “82 supina — 252 | Psilostrophe 3 504 
cordata 463 nove boracensis 77 tridentata 262 (Riddellia) 
“ angustifolia 463 Nuttallit ria Vahliana 255 gnaphalodés 504 
lancifolia 463 Oakesianus 76 | Poteridium 2 265 Tagetinae 504 
limosa 464 obtusifolius 82 annuum 265 villosa 504 
Populus I 587 parormitanus 84 | Poterium 2 265 | Psoralea 2 360 
acuminata 589 pauciflorus 82 annuum 265 argophylla 363 
alba 587 pectinatus 1 87 canadense 265 aurea 368 
angulata 590 perfoliatus 80 Sanguisorba 266 bituminosa 360 
angustifolia 588 “ lanceolatus 80 | Prasium ; f collina 362 
balsamifera 588 “ Richardsonii 80 purpureum - 3 117 cryptocarpa 363 
candicans 588 pinnatum 2 616 | Prenanthes 3 334 cuspidata 363 
carolinensis 590 praclongis I 80 see Nabalus 3 335-8 Dalea 367 
coloradensis 589 pulcher 76 juncea 322 digitata 362 
deltoides 590 pusillus 84 mainensis 337 esculenta 363 
“ occidentalis 591 “vars, 83-6 pauciflora 312 floribunda 361 
dilatata 590 Robbinsii 87 runcinata 312 hypogaea 364 
grandidentata 589 trufescens 77 tenuifolia at2 incana 362 
heterophylla 589 rutilus 83 | PRIMULACEAE 2 707 lanceolata 361 
italica 590 spathulaeformis 78] Primula 2 708 linearifolia 362 
monilifera 590 Spirillus 86 egaliksensis 709 longifolia 386 
higra 590 “ curvifolius 86 farinosa 708 macrorhiza 363 
