588 
Penthorum 
sedoides 2 wty 
Pentstemon 3 182 
acuminatus 186 
albidus 184 
angustifolius 187 
calycosus 185 
canescens 183 
Cobaea 186 
coeruleus 187 
cristatus 183 
Digitalis 184 
erianthera 183 
glaber 187 
gracilis 185 
grandiflorus 186 
Haydeni 187 
hirsutus 182 
laevigatus 183-4 
pallidus 183 
Pentstemon 184 
pubescens 182 
tubiflorus 185 
Peplis 
americana 2 538 
diandra 579 
Pepo 3 291 
foetidissima 291 
Peramium I 569 
(Goodyera) 
decipiens 570 
Menziesii 570 
ophioides 569 
pubescens 570 
Tepens 569 
tessellatum 569 
Perilla 3 153 
frutescens 154 
“nankinensis 154 
ocimoides 154 
“ crispa 154 
Perivloca 
graeca 3 39 
Peritoma 
serrulata 2 197 
Persea 2 133 
Borbonia 133 
carolinensis 133 
“ palustris 133 
gratissima 133 
Persea 133 
_ _ pubescens 233 
Persicaria I 665 
amphibia 666 
Careyi 668 
Hydropiper 670 
hydropiperoides 669 
lapathifolia 66 
longistyla 667 
Muhlenbergii 666 
omissa 667 
opelousana 669 
orientalis 670 
pennsylvanica 667 
Persicaria 68 
persicarioides 668 
portoricensis 667 
punctata 670 
robustior 670 
setacea 669 
tomentosa 667 
Perularia I 551 
flava 552 
Petalostemum 2 368 
compactum 369 
candidum 368, 9 
foliosum 371 
gracile 369 
macrostachyus 369 
multiflorum 370 
oligophyllum 369 
purpureum 370 
Petalostemum 
tenuifolium 2 
villosum 
violaceum 
Petasites 3 
(Nardosmia) 
frigida 3 
officinalis 
palmata 
Petasites 
sagittata 
trigonophylla 
vulgaris 
Petrorhagia 
saxifraga 
Petroselinum 2 
hortense 
sativum 
Petroselinum 
Petunia 3 
axillaris 
nyctaginiflora 
parviflora 
violacea 
Peucedanum 
daucifolium 2 
graveolens 
Kingii 
sativum 
verticillatum 
Phaca 
aborigina 
americana 
argophylla 
astragalina 
baetica 
bisulcata 
Bodini 
caespitosa 
elatiocarpa 
elegans 
elongata 
flexuosus 
frigida ameri- 
cana 
longifolia 
latiflora 
neglecta 
parviflora 
pectinata 
Robbinsii 
sericea 
villosa 
Phacelia 
bipinnatifida 
Covillei 
dubia 
fimbriata 
Franklinii 
heterophylla 
hirsuta 
integrifolia 
leucophylla 
parviflora 
Purshii 
secunda 
Phaethusa 3 
americana 
helianthoides 
occidentalis 
virginica 
Phatosperma 2 
PHALARIDEAE I 
Phalaris I 
americana 
arundinacea 16 
“ bicta 
canariensis 
caroliniana 
erucaeformis 
intermedia 
oryzoides I 
370 
371 
370 
531 
532 
532 
535 
170 
9,70 
170 
170 
170 
228 
170 
68-9 
GENERAL INDEX OF LATIN GENERA AND SPECIES. 
Pharbitis 
hederacea 3 45 
purpurea 45 
Pharnaceum 
maritimum 2 34 
PHASEOLACEAE 2 341 
Phaseolus 2 422 
angulosus 423 
diversifolius 423 
helvolus 423-4 
leiospermus 424 
perennis 423 
polystachyus 423 
umbellatus 424 
vulgaris 422 
see Strophostyles 
423-4 
Phegopteris 
calcarea I 24 
Dryopteris 23 
hexagonoptera a3 
Phegopteris 23 
polypodioides 23 
Robertiana 34 
Phelipaea 
lutea 3 234 
Phellopteris 2 644 
montanus 645 
Philadelphus 2 231 
coronarius 232 
grandiflorus 232 
inodorus 232 
Philozera 3 510 
multiflora 510 
Philotria I 104 
angustifolia 105 
canadensis 105 
minor 106 
Nuttallii 105 
Phipps I 193 
algida 193 
Phleum I 190 
alpinum IQI 
pratense 190-1 
schoenoides 190 
Phlomis 3 118 
fruticosa 118 
tuberosa 118 
hlox 353 
amoena 55 
amplifolia 54 
argillacea 55 
bifida 56 
Brittonii 58 
bryoides 58 
carolina 54 
divaricata 56 
Douglasii 59 
“ andicola 59 
“ longifolia 59 
glaberrima 53,5 
Hoodii 58 
Kelseyi 57 
longifolia 59 
maculata 54 
“ candida 54 
ovata 54 
paniculata 53 
pilosa 55 
reptans 56 
Stellaria 57 
stolonifera 56 
suaveolens 54 
subulata gy 
Phoradendron 1 639 
californicum 639 
flavescens 639 
Phragmites I 232 
communis 232 
Phragmites 232 
PHRYMACEAE 3 244 
Phryma 244 
Vou. ITI. 
Phryma 
Leptostachya 3 245 
Phyla } ot 
Phyllanthus 2 453 
carolinensis 453 
Niruri 453 
obovatus 453 
Phyllitis I 25 
colopendrium 25 
Phyllodoce 2 685 
coerulea 685 
Phymosia 2 521 
abutiloides 521 
cuspidata 522 
remota §22 
Physalis 3 155 
aequata 158 
Alkekengi 156, 162 
angulata 158 
barbadensis 157 
“ obscura 157 
comata 161 
grandiflora 163 
hederaefolia 161 
heterophylla 161 
ixocarpa 158 
Lagascae 157 
lanceifolia 158 
lances lat. 160 
aevigata 159 
“ hirta I a 
lobata 162 
longifolia 159 
macrophysa 159 
missouriensis 157 
obscura 157 
pendula 158 
pennsylvanica 160-2 
philadelphica 159 
peruviana 161 
pruinosa 157 
pubescens 156 
pumila 160 
rotundata 161 
subglabrata 159 
virginiana 160-1 
“intermedia 160 
viscosa 161-2 
Physalodes 3 155 
Nicandra) 
peruvianum 155 
physalodes 155 
Physaria 2 156 
brassicoides 156 
didymocarpa 156 
Physocarpus 2 244 
intermedius 244 
missouriensis 244 
Physostegia 3 116 
denticulata Iz 
digitalis 116 
intermedia 117 
parviflora 117 
virginiana 116 
PHYTOLACCACEAE 2 25 
Phytolacca 2 25 
americana 26 
decandra 26 
Picea I 60 
(Abies in part) 
alba 61 
australis 61 
brevifolia 61 
canadensis 61 
mariana 61 
nigra 61 
rubens 61 
rubra 61 
Picradenia 3 510 
acaulis 509 
odorata 510 
Picradeniopsis 507 
