396 INDEX. 
Page. Page 
Pol d , 303 {| Pyrola minor, 184 
A n edium, Hook. & Arn...........-- 303 rtuniifin, L., var. uliginosa, Gray..--..... 184 
pachyphyllum, D. C. Eaton OR is ina Re a Set a ee 184 
1; OO. CAIN cine eee ee 304 Pyrshopaypus Rothrock Ded (EERE 9 set ee 181 
vulgare, L 303 205 
Feepsichins angulare , Presl 336 Quercus ee 374 
, Hedw 347 say List Oe ee ye eee eee 374 
Populus Se Ait 242 confer seg - 951 
samifera, L., S aeeak Watson... 242 374 
Sia L., var. candicans, Gray ...... 242 coreg 250 
— Ait 242 grisea, Liebm 250 
quulonios, MOK... ¢5-)sce.e. 0s S, 51, 242 Gambellii, Nutt 249 
baetyine macrocephalum, DM ec ucecn sce cuene oot 1 tata, Liebm 250 
, Engelm 72 ypolouca, dingelm./--. 02.2 cce en 251 
oe : 92. 72 lobata, Née 374 
PORTULAC 72 blongifolia, Torr 250 
Potamogeton gramineus, L., var. heterophyllus, pungens, Lieb 250 
Fries 268 reticulata, H. 250 
arinus, L 268 Sonomensis, Benth 374 
pectinatus, L 68 undulata, T 22, 249, 252 
perfoliatus, L., var. lanceolatus, Rob- undulata, Torr., var. . Gambellii, Engelm. - 249 
bins? 268 undulata, Torr., var. grisea, Engelm.-.---.. 250 
Potentilla Anserina, L 114 vis Torr., var. pungens, Engelm -.... 250 
dissecta, Pursh 113 ata, ae , var. oblongata, Engelm.... 250 
fissa, Nutt 112 |} RAN UNCULACE 55, 354 
fruticosa, L 114 | Ranunculus pace: Gray 57 
— Lindl, var. Nevadensis, Wat- affinis, R. Br., var. cardiophyllus, Gray. 57 
112, 366 Andersoni, Gra: 57 
pe ageh pa cebens cance wep aes sua 1 aqua’ sre L., var. stagnatilis, DC....-... 56 
gracilis, Dougl., var. rigida, Watson... .. 113, 360 aquatilis, L., var., ie Re Chaix. 354 
iippaans, Lebai.. woo. 0. ccc jess wssvaecuate 112 parma oe | Sanne tetera 57 
humifusa, Nut 113 Cymbalaria, asa Re et aren pa sar conan ai 5, 56, 354 
nivea, L 113 Californica, Esc r. tomentella, Gray 357 
Pennsylvania, DL... 626 soseoccerssncbis. 112 Flamuinula, L., var. spe Giay Ste. 56 
Plattensis, Nutt 113 eitiaictea 00k 57 
rivalis, bps 112 = doen eaange hesknhen pus eeasees 2, 56 
urberi, 113 hyperb: s Roth.» xe fi natans,C.A.Mey 57 
eeleri, ef (Pl. 1) 360 Lani 58 
Pottia Heimii, Hedw 342 Purshii, Ri aaa PS alae Va oe ae 57 
i angustifolia, Torr 184 Purshii, Richards var. trichophyllus, 
farinosa, L 184 Chaix 56 
Parryi, Gray 184 recurvatus, Poir 58 
suffrutescens, Gray din Recep peeve neesnieeee ee 57 
PRIMULACEX 184, 368 = tate MS i ce od 57 
. Prosopis 87 RHAMNEZ 82, 357 
glandulosa, Torr 106 us Calif , Esch 357 
juliflora, DC 42, 106 - erocea, Nutt 82 
pubesceus, Benth. .0o0. sl 42,107 | Rhus aromatica, Ait., var. trilobata, Gray........... 84 
Prunus demissa, Walp 110 diversiloba, T. & G 42 
doleskea at , Dicks 347 glabra, 84 
Pseudotsuga Douglasii, Carr. 7, 9, 29, 257 integrifolia, Benth: & Hook... 258 84 
ea 86 Ok OUenOMN Ts 5 oe 84 
i Watt. .i<. KneknebabiaecdevGns.s 98 eibiei: utt 84 
machrostachya, 359 virens, Lindl 84 
Ptel tifolia, Benth.? 81 | Rhynchosia 86 
Pteris 329 Texana, Torr 104 
Alabamensis, Buckley 312 | Ribes — Pursh, var. tenuiflorum, Torr ees 118 
andromedefolia, Kaulf .........222. 200206 ales 32 ereum, Dougl 118, 361 
aquilina, L 324 , Poir., var. setosum, Gray............ 117 
CPUPB, Ls. 002. wa snne severe vee Lanensecnises: 318 leptanthum, Loe Sea Sateen ot ener cs 117 
gracilis, Michx 319 Menziesii, Pursh 361 
ii 324 oxycanthoides, L 117 
Stelleri, Gmelin 319 pA aN es var. variegatum, Watson . 118 
sulphurea, Cav ..... 307 _ Lin 118 
ternifolia, Cav 321 ssimum ade es 118 
Pterospora NW is i 184 | Ribes Wolf, Rothrock 
