oreganus elatior, 
IV, 492 
oregonus, IV, 492 
tenellus, IV, 492, 493 
tenuis, IV, 493 
tenuis, IV, 493 
Psilostrophe, IV, 194 
castorea, LI, 
douglasti, I1, 55 
oe purshii; 
II 
Ss ’ 
Psychrobatia pedata, 
II, 455 
Ptelea;-J 11, 17 
baldwinii crenulata, 
Powe: 18 
nulata, III, 1 
Jrifoliate, ce 18 
pir se as lr 
PTERIDOPHY vTa, 1,1 
Pteris andromedaefolia, 
bs < 
ropurpurea, I, 29 
caw ” * 23 
fee 
sca 1. 22 
stelleri, 
Pterochiton occidentale, 
11,8 
Pterostephanus run- 
cinatus, IV, 58 . 
Pteryxia, III, 2 
oeniculacea, IT 
Ptilocalais pin 9 
IV,5 
maior, IV, 556 
nutans, IV, 556 
Pvt sie TV, 556 
gira: 
anihemoides, ike 219 
Ptilonella laevis, 
TV.t 
INDEX OF SCIENTIFIC NAMES 
scabra, IV, 192 
subcalva, IV, 192 
Ptilophora major, 
laciniata, IV, 556 
nutans, IV, 5 
Ptiloria canescens, 
exigua, IV, 57 
deanei, IV, 574 
filifolia, IV, 571 
lemmoni, I, 
Pugiopappus bioclowi, 
IVA 
Pie ons ciliata, 
Ti, 
oblongifolia, III, 546 
a Fi 451: 
TEL 
pretends ml 451 
Pycnanthemu 
III, 
californicum, III, 658 
Pyrethrum halsamite; 
396 
acetoides, IV, 396 
Peer iat IV, 395 
thenium, IV, 396 
asarifolia bracteata, 
III, 288 
incarnata, IIT, 290 
uliginosa, III, 290 
m 
minor, III, 291 
pallida, I IT, 290 
Pyrrocoma apargioides, 
274 
ligt 
arguta, IV, 2 
balsamitae, IV, 2 
c 
ersthropappa, W. 272 
folios 
ial pe on 
gossypina, IV, 2 
grindelioidesi, = 286 
roi 0 
rt gifolia, 276 
tenuicaulis, 1V, 275 
——— JV, 274 
inihora 274 
Pirie pal oa 
II, 470 
fusca, II, 470 
malus, I1, 470 
pits 8 II, 470 
rivularis, II, 470 
slichensis, Il, 470 
californica, Tl, 470 
Quamasia, 1, 415 
azu I, 416 
Ae 
Quamoctidion froebelit, 
pile net, II, 106 
multiforum obtusum, 
a, 1, 52 
prapioniou L co 
tinctoria 
californica, I, 517 
tecemieae: 4,521 
turbinella, I, 520 
wislizenii, I, 517 
frutescens, 1,517 
Radiana petiolata, 
EH, 
—_ TI, 276 
ta, II, 279 
patie Tl, 279 
columbiae, II, 278 
paniculata, IV, 426 
pringlei, [V, 428 
