INDEX 
Preissia hemisphaerica, 585; quadrata, 
8 
Primula angustifol 100, 467, 470; 
z roadheadae, 100; 5 a 90; Parryi, 
> 470, 472 
Pron 194, 197; Lyallii, 174 
ropagation of wash plants The, 105 
reer . va 
Prosopis velut 
Ge cohaicaon 
integrifolius, 297 
Proto phyllum, 296, 297; multinerve, 297; 
Sternbergii, 297 
Prunus americana, 362; caroliniana, 214; 
sere ryeg a, 340; serotina, 213; umbellata, 
preter 297; sub- 
Eecdeks ai aa _ 366, 
yun 
Tt “id 
Peeudopter yxia anisata, 465; Hender- 
466 
Picndovsusd taxifolia in arid parts of 
hington, Slope exposure as a Fiske 
in the distribution of, 337 
Pseudotsuga taxifolia, 337, 338, 339, 340, 
Psilotaceae, 
Psilotum, vy complanatum,* 56, 573 
nudum, 56; oahuensis, 56; triquetrum, 
Psoralea Onobrychis, 29, 36 
Psychotria, 11; fcuecieia. ti; ers 
neri, ye ; undata 
the,—IV, 51 
Pteris, 395, 396 ; lanceolata, 397; 
lin stor ane 304, ig 397; pilostoides 
a8 pa na, 
um, 84 
169 
Pycnanthemum ea caein.s 356, 363 
Peecale: 4 I9I 
hrum cinerarifolium, 126 
15; chlorantha, 
4; rotundi- 
uliginosa, 472 
rolaceae, 4II 
Pyronema, ok 160, 161, 163, 164, 166, 
167, 169, 171, 179, 180, 181, 184, I 
188, 190, 192, 193, 194, 196; confluens, 
159, 
Pyrus coronaria, 362 
Quamasia hyacinthina, 29, 35 
653 
Quercus alba, 213, 219; aquatica, 214; 
arkansana, 214; Catesbaei, shy 559, 
63, 5606; cinerea, 211, 559 9, 6: cata, 
4 
38; Morrisoniana, 298; myrti folia, it 
nigra, 214, 219, 559; SMtonatlatis 303; 
Phellos, 559; Fes 20,33, 35; pniiiile, 
563, 566; rubra, 219; severnensis, 298; 
- 214; stellata, 21I, 559; ve eluting, 
3; virginiana, 559 
Quilinia Saponaria, 126 
Radiovittaria, 391, 393, 397, 4 
6 
Radula arctica, 606, 607, rer 615; 
Bolanderi ir yeu 609, “a ie coch- 
leariformis, mplan 613; 
Krausei, 613; aa ey er: pee 609, 
610, 615; prolifera, 609, 610; spicata, 
07 
Ramona incana 
» 341 
anita 466; adone wee 
affini 6, 472: alismacfolius, 4733 
etimins. 473; glaberrimus, 339; hyper- 
boreus, 97, 467; Macauleyi 98 468; 
ifidus, 96; pygmaeus, 
ate 98; pedati 
93, 467; saxicola, 468; stenolobus, ror, 
3 
Raritania gracilis, 298 
gern anit ip between the mber of 
vules diag ed and the pedir of seeds 
Cercis, On the, 243; 
aticae of Alaska, 577 
i ew of investigations of the mosaic 
ease of tobacco, sei er with a 
cornet hy of the more important 
ese A, 435 
eeeines e genus Vittaria J. E. 
Smith I. The species ;of the sub- 
genus eathivi vittaria, 391 
Rhamnites apiculatus, 298 
Rhexia Alifanus, — hartal 567; glabella, 
567; lutea, 561; vir 
Rhodiola, “46 integral, 96, 99, 467; 
polygam 
Schododenaiesa ante Song 28, 29, 30; 32, 
35, 41 
Rhodotypus 
Rhus peltte i 560, 563; glabra, 363, 
560, 563; glabra occidentalis, a 
mollis, 303; radicans, 214; 
endron, 341, 363; sr cataseleneienn 
cam 66, 36 
ibes reum, pet montigenum, 465; 
apael arent 465, 4 
Riccardia, 599, 601; eacticin 585; major, 
612, 615; multifida, 586, 61 
Riccia — 493°" Prostti,: 333° 
natans, 333 
