Vol. III. 



GENERAL INDEX OF LATIN GENERA AND SPECIES. 



589 



Picradeniopsis 



oppositifolia 3 508 



Picris 3 3 1 1 



asplenioides 311 



echioides 311 



hieracioides 3 1 1 



Picrococcus 2 697 



Pieris 2 689 

 (Andromeda in part ) 



floribunda 690 



formosa 690 



mariana 691 



nitida 690 



Pilea 1 636 



muscosa 636 



pumila 637 



Pilosella 2 175 



tioz'ae-angliae 176 



spathulata 3 332 



Pimpinella 2 654 



integerrima 639 



magna 655 



saxifraga 655 



Pixaceae 1 55 



Pinguicula 3 225 



acutifolia 225 



alpina 226 



vulgaris 225-6 



Pinus 1 56 



Abies 60 



alba 61 



justralis 57 



balsamea 63 



Banksiana 58 



canadensis 62 



divaricata 58 



cchinata 58 



Fraseri 63 



inops 58 



laricina 60 



mitts 58 



nigra 61 



palustris 57 



pendula 60 



Picea 63 



ponderosa 57 



pungens 59 



resinosa 57 



rigida 59 



rubra 61 



scopulorum 57 



serotina 60 



Strobus 56 



sylvestris 56, 60 



" divaricata 58 



Taeda 59 



virginiana 58 



Piperia 1 554 



unalaskensis 555 



Pisum 



maritimum 2 413 



Planera 1 628 



aquatica 628 



Planodes 



virginicum 2 179 



Plantaginaceae 3 245 



Plantago 3 245 



arenaria 249 



aristata 248 



asiatica 245 



borealis 247 



cordata 247 



decipiens 247 



elongata 249 



eriopoda 247 



glabra 247 



gnaphalioides 248 



halophila 246 



heterophylla 249 



lanceolata 246 



major 245 



maritima 247 



Plantago 



media 3 246 

 patagonica 



" aristata 248 

 "gnaphalioides 248 



Purshii 248 



pusilla 249 



rhodosperma 248 



Rugelii 246 



sparsiflora 247 



spinulosa 248 



uniflora 250 



virginica 248 



Platanaceae 2 242 



Platanus 2 .242 



occidentalis 242 



orientalis 242 



Platanthera 



holopetala 1 557 



rotundifolia 551 

 see Habenaria 552-9 



Plectocephalus 



americanus 3 559 



Pleiotaenia 2 633 



Nuttallii 633 



Pleurogyna 3 14 

 (Swertia) 



rotata 14 



Pleurophragr>\a 



integrifolia 2 169 



Pleuropogon 1 247 



Sabinii 247-8 



Pleuropterus 1 675 



cordatus 675 



Zuccarinii 676 



Pluchea 3 447 



bifrons 447 



camphorata 448 



foetida 447 



petiolata 448 



Plumbagixaceae 2717 



Pneumaria 3 82 

 (Mertensia in part) 



maritima 82 



Poa 1 252 



abbreviata 253 



airoides 268 



alpina 254 



alsodes 257 



andina 260 



angustata 267 



annua 253 



aquatica 262 



" aniericana 265 



arachnifera 259 



arida 260 



autumnalis 257 



brachyphylla 258 



brevifolia 258 



Buckleyana 260 



caesia 254 



" strictior 256 



capillaris 239 



capitata 243 



caroliniana 240 



cenisia 258 



Chapmaniana 253 



compressa 1 259 



confusa 261 



cristata 253 



crocata 256 



debilis 255 



distans 267-8 



elongata 264 



eminens I 259 



Eragrostis 240 



fasciculate 258 



flava 233 



flexuosa 257 



glauca 254 



glumaris 259 



h irsuta 239 



Poa 



hypnoides 



interrupta 



King ii 



laevigata 



laevis 



laxa 



maritima 



memoralis 



nervata 



nitida 



obtusa 



pectinacea 



pilosa 



pratensis 



1 243 

 242 



273 

 260 

 260 

 1 254 

 267 

 256 

 264 

 245 

 269 

 241 

 240 

 252, 256 



angustifolia 256 



pratericola 260 

 pseudopratensis 1 255 



refracta 24 1 



seslerioides 23s 



serotina 256 



sylvestris 257 



tenuifolia 260 



tenuis 239 



Torreyana 264 



trichodes 242 



triflora 256 



trivialis 255 



uniflora 198 



Wolfii 258 



Weigeltiana 243 



Podalyria 



australis 344 



bracteata 2 345 



mollis 343 



Podophyllum 2 129 



diphyllum 129 



peltatum 130 



Podostemaceae 2 205 



Podostemum 2 205 



ceratophyllum 205 



Pogonia 1 559 



affinis 561 



divaricata 560 

 ophioglossoides 560 



pendula 562 



trianthophora 562 



verticillata 561 



Poinsettia 2 476 



dentata 476 



cuphosperma 476 



pulcherrima 476 



heterophylla 477 



Polanisia 2 199 



graveolens 199 



trachysperma 199 



Polemoniaceae 3 52 



Polemonium 3 63 



coeruleum 63 



dubium 69 



Nyctelea 67 



reptans 63 



van Bruntiae 63 



Polycodium 2 697 



melanocarpum 697 



stamineum 697 



Polygalaceae 2 446 



Polygala 2 44 <> 



acuti folia 447 



alba 451 



ambigua 449 



brevifolia 448 



corymbosa 447 



cruciata 448 



Curtissii 450 



cymosa 447 



fastigiata 450 



incarnata 449 



lutea 447 



mariana 4^0 



Nuttallii 450 



paucifolia 452 



Polygala 



polygama 2 451 



" abort wa 451 



ramosa 447 



sanguinea 449, 50 



Senega 451 



" latifolia 451 



" tenuifolia 451 



Torreyi 448 



uniflora 452 



verticillata 488 



" ambigua 449 



viridescens 449 



vulgaris 446 



Polygonaceae 1 646 



Polygonatum 1 521 



biflorum 521 



commutatum 521 



giganteum 521 



Polygonella 1 676 



aniericana 677 



articulata 676 



ericoides 677 



parvifolia 676 



Polygonum 1 659 



acre 670 



amphibium 666 



arifolium 673 



articulatum 676 



atlanticum 663 



aviculare 659, 61 

 " angustissimum 662 



Bellardi 663 



buxiforme 662 



camporum 663 



Careyi 668 



cilinode 674 



" erectum 674 



Convolvulus 674 



cristatum 675 



cuspidatum 676 



densiflorum 667 



Douglasii 664 



dumctorum 675 



emersum 666 



erectum 663 



exsertum I 661 



Fagopyrum 672 



Fowleri 660 



glaucum 660 



Hartwrightii 666 



Hydropiper 670 

 hydropiperoides 669 



" Macouni 669 



incarnatum 666 



lapathifolium 666 



" incanum 666 



" nodosum 666 



leptocarpum 661 



littorale 662 



longistylum 667 



maritimum 660 



mite 669 



monspe/iense 661 



Muhlenbergii 666 



neglectum 662 



opelousanum 669 



orientate 670 

 pennsylvanicum 667 



Persicaria 665, 6 



persicarioides 668 



portoricense 667 



prolificum 662 



provinciale 662 



punctatum 670 

 " leptostachyum 670 



" robustius 670 



Rayi 660 



ramosissimum I 663 



"atlanticum 663 



"prolificum 662 



sagitlatum 673 



