1918] 
Pennsylvania, vegetation of 288 
Pentstemon Albrightii 60; Dee 69; 
rpulcher 67; subulatt 
Perisporium melio 228; shit dilini niae 228 
psi mech Gtantitative measurement 
Phaceia calthifolia 341 
h ea toe sac and embryo 376 
Phot tosynthes 
Phyllogon a Yes Eth m 336 
Physalis hederacoli 341 
oe system, a living 197 
S 
76 
Plant, communities and sap concentra- 
ps ts physical factors in distribu- 
atydesma ci ig 
Pleiosperm 
Pleurostachys: By 
Polygonum 481 
-orto Rico. Metiolicolous parasites 227 
-renanthes hasta 
a Ss of Pi vcupodian 362; of 
vi 
° 
4 
=> 
= 
a 
ie 
Pseudonectria see 230 
Psilostrophe Coo: 343 
sai naead prota of 567 
Paye hotria 285 
Pucks ‘Acnist 2953 
Bambus org side ‘Becki 203 ‘card 
press species of 289; cu 471 
discreta 308; egregia 306; Cechane. 
Nico anae 470; 
sculpta 301; 
a5; gee 4713 Spilan- 
unic oe 472; Vernoniae 
290, Vernoniae- Poaltle = ver- 
Bid “har 206; Catiointta 2 
simplex 33 
this vd 
Quercus alba 434; alba latiloba 435; 
ray system of alba 313; Andrewsii 455; 
annulata 443; austrina Neh beau- 
451; Bushii 453; cinerea 
INDEX TO VOLUME LXV 
577 
4333 coccinea tuberculata 426; Cock- 
sii 450; Comptonae 450; 
guadalupens is 454; i 
Hastingsii 450; Jolon 
folia 432; ntata 433; 
Lowellii 4590; Me Richeinngll 2; Mo hri- 
nigra 428 : 
439; stellata palud 
erat parvilo o 438; stellate heel 
ns 439; subfalcata microcarpa 454; 
tex 23, 426; xana_ chesosensis 
423; texana stellipila 424; utahensis 
submollis 442; virginiana 443; virgin- 
iana dent 448; virginiana exi 
; virginiana fusif 448; 1 
447; rginiana maritima 
449; virginiana pygmaea 440; virgin- 
jana virescens 44 
R 
Ramaley, F. 196 
Raritebe 483 
Ray system of Quercus alba 313 
Redwood Joga ge 492 
work 
Reed, 
Regeneration of f Bryopbiyium IQ 
Rendle, A. B., work of 2 
Respiration of of chingcact 354 
’s “British rae oa 
“paeers oe Flora oO 
he : release’s 
