652 INDEX 
Physma compactum, 
Phytogeographical wiches on the Rocky 
Mountain region, II. Origin of the 
ora, 8 
alabie fl 9; III. Formations in 
the alpine zone, 45 
cea alba, 628; balsamea, 628; cana- 
densis, 28, 
629; mariana, 628; 
oe 
e-barren vegetation a Mistosip pi A, 
superficial study of, 
23, 
627, 628, 629; cont sae 3433 echinkts. 
211, 559, 563; Elliottii, 559, 563, 564; 
glabra, 219, 550, 56 S. 
09, 503; , 
219, ie 563, 565; virginiana, 29, 33; 
Piper, 137, 138, 140, a Pe 155, 156, 
ieee a gas part sae 150; 
i: tuber- 
culatim, 138, 1 ae Ke es ales 
Pistia Nordenskioldi, 298 
itcheria galactioides, 212 
um 
Pithecolobium, 2 ; ta) ; 
asplenifolium, 3, 6; bahamense, 2, 43 
Berterianum, 3, 8; brevifoli : 
calliandrifolium, 4; circinale, 2, 3; 
discolor, 2, 4; filicifolium, 7; guada- 
lupense, 2 4; tanamense, 3, 7; 
ystrix, 2, 4; latifolium, 8; m na- 
tum, 3; » 3, 6; obovale, 2, 5; 
etoru: Ma 8 hensile, 3, 8; 
Saman, 3, 8 v m, 2, 4; tortum, 
ie 7} nceatum, 2, 5 
inguis-cati » 2, 3; vincentis, 8 
Plagiochila, 58 » 504; alaskana, : 
591, 592, 595, 615; asplenioides, 
590; fragilis, 592, 593; i, 593, 594, 
595, 615; oxyphylla, 592, 593; pachy- 
ne SEs 93; renitens, 591, 592; 
A 
3 
trapezoidea, 591, 
Plantago Pam icc 514, 515; major, 
519 
Pleuroschisma Pearsoni, 59 
Pleurozia, 610; cochleariformis, 610; 
conchaefolia, 611; gigantea, 611; pur- 
ur I S 16 
7; annua, 515; arctica, 06, 99, 467; 
> 4 i 
469, 471; Lettermannii, ror, sa — 
| 
pars pratensis, nn Bra, 5r4,; 515, 516, 
"§1Q; 590; 52 
pudi 
ae, bila tee IOI, 463; Shel- 
; Pocosin” ” of Pike County, Alabam 
and its bearing on certain problems of 
sini icon 209 
Podostem 
Pi caceies €s ies oleae 297; lanceolatus, 
us, 296 
206; marginatus 
lemonium, 466; ag IoI, 468; 
confertum, 101, 465, 468, 470; delica- 
tum, 90, 466; Grayanum, 101; humile, 
96; mellitum, ror, 470; anthum, 
3433 ek aah 99, 469; pulcher- 
m, 96, 99, 466, 467; speciosum, 
rimu 4 
IOI, 465, 470; viscosum, 101, 466, 468, 
(pene os ee 561; cymosa, 560, 566; 
56 
Polygonatum, bittorum, 214 
Polygonum amphibium Pies ionic 
360; aetatina. 39.38% culare, 512 
4.) 5153. §18,°.520; convlvuls, 514 
a 517, 518, 519; erectu 2; 
Persicaria, 514, ea 518; sp. 436 
Polyides, 167, 173, 
Polypodium, 391; a ee 212, 214 
67, a 
| 
Po 
Polystigma, 158, 171, 
Populus balsamifera, be 580; deltoides, 
359; grandidentata, 511; stygia, 298; 
tremuloides, 29, 36; trichocarpa, 338, 
340 
Porella, 608; mavicularis, 611, 615; 
platyphyla 613; rivularis, 612; Roellii, 
6 
Pp Gronia nae ctata 
longiligula, 469; Pattersonii, 100, 463, | 
Porteranthus stipulatus, 20, 
rtlandia, 21; cinea, 21, sa cctine ea, 
23; daphnoides, 21, 23, 24; domingensis, 
2I, 24; elli , 21, 22; grandiflora, 
21, 22; gypsophila, 23; Harrisii, 21, 22; 
involucrata, 21 . + List » 21, 23; 
ongiflo sone 23; nitens, 21, 22; pendula, 
23:6 sailitolie. 21; uliginosa, 21, 22 
ortulaca ol ce 7 
ontana, 101; tenerrima, IOI, 
464; uniflora, 93, ¥o2; villosa, 93, 102 
Poteridium, 322; annuum, 322, 323; occi- 
32 
entalis, 
Poterum, 323; annuum, 323; Sanguisorba, 
323; spinosum, 323 
ca, 99, 470; 
a e 
Se ee ee 
ng SERENE DES Nig Wk AER 
sant ow tts 
