396 



ISTDEX. 



Page. 



Polypodium falcatura, Kellogg 303 



intermedium. Hook. & Am 303 



pachyphyllum, D. C. Eaton 304 



Scouleri, Hook. & Arn 304 



vulgare, L 303 



Polystichum angulare., Presl 336 



Polytrichum j uniperinum, Hedw 347 



Populus angulata, Ait 242 



balsamifera, L., var. angustifolia, "Watson. - 242 



balsamifera, L., var. cahdicans, Gray 242 



monilifera, Ait 242 



tremuloides, Michx 51, 242 



Porophyllum macrocephalum, DC 169 



Portulaca lanceolata, Engelm 72 



oleracea, L.?? 72 



PORTULACACE.E 72 



Potamogeton gramineus, L. , var. heterophyllus, 



Fries 268 



marinus, L 268 



pectinatus, L 268 



perfoliatus, L., var. lanceolatus, Rob- 

 bins? 268 



Potentilla Anserina, L 114 



dissecta, Pursb 113 



fisBa, Nutt 112 



fruticosa, L 114 



glandulosa, LindL, var. Nevadensis, Wat- 



son 112,366 



gracilis, Dongl 113 



gracilis, Dougl., var. rigida, "Watson 113, 360 



Hippiana, Lehm 112 



humifusa, Nutt 113 



nivea, L 113 



Pennsylvanica, L 112 



Plattensis, Nutt 113 



rivalis, Nutt 112 



Thurberi, Gray 113 



Wheeleri, Watson (PL HI) 360 



Pottia Heimii, Hedw 342 



Primula angustifolia, Torr 184 



farinosa, L 184 



Parryi, Gray 184 



suflrutescens, Gray 368 



PRXMULACE^l 184,368 



Prosopis 87 



glandvlosa, Torr 106 



jnliflora, DC 42,106 



pubescens, Benth 42,107 



Prunus demissa, "Walp no 



Pseudoleskea atrovirens, Dicks 347 



Pseudotsuga Douglasii, Carr 7,9,29, 257 



Psoralea 86 



floribunda, Nutt 98 



machrostachya, DC 359 



Ptelea angustifolia, Benth. ? 81 



p teris 329 



Alahamensis, Buckley 312 



andromedmfolia, Kaulf 320 



aquilina, L 324 



crispa,!, 318 



gracilis, Michx 319 



lanuginosa, Bory 324 



Stelleri, Gmelin 319 



sulphurea, Cav 307 



Urnifolia-, Cav 321 



Pterospora Androinedea, Nutt 184 



Page- 



Pyrola minor, L 184 



rotundifolia, L., var. uliginosa, Gray 184 



sccunda, L 184 



Pyrrhopappns Rothrockii, Gray (PL XIY) 181 



Quamoclit coccinea, Mcencb 205 



Quercus agrifolia, N6e 374 



cbrysolepis, Liebm -■ 374 



confcrtifolia, Torr 251 



dumosa, Nutt 374 



Emoryi, Torr 250 



grisea, Liebm 250 



GambeUii, Nutt 249 



hastata, Liebm 250 



hypoleuca, Engelm 251 



lobata,Nee 374 



dblongifolia, Torr 250 



pungens, Liebm 250 



reticulata, EB.K 250 



Sonomensis, Bentb 374 



undulata, Torr 22, 249, 252 



undulata, Torr., var. Gambellii, Engelm 249 



undulata, Torr. , var. grisea^ Engelm 250 



undulata, Torr., var. pungens, Engelm 250 



undulata., Torr., var. oblongata, Engelm 250 



RANUNCULACE^ 55,354 



Ranunculus adoneus, Gray 57 



affinis, R. Br., var. cardiopbyllus, Gray. 57 



Andersoni, Gray 57 



aquatilis, L.,var. stagnatilis, DC 56 



aquatilis, L., var., trichophyllus, Chaix. 354 



cardiopbyllus, Hook 57 



Cymbalaria, Pursb 5, 56, 354 



Californica, Escb., var. tomentella, Gray 357 



Flaminula, L., var. reptans, Gray 56 



glaborrimus, Hook 57 



hydrocbaroides, Gray 22, 56 



byperboreus,Rotb.,var.natans,C.A.Mey 57 



macrantbus, Scbeele 58 



Purshii^ Richards 57 



Pursbii, Richards, var. trichophyllus, 



Chaix 56 



recurvatus, Poir 58 



sceleratus, L 57 



tridentatus, H. B. K 57 



RHAMNE^l 82,357 



Rharonus Californica, Esch 357 



crocea, Nutt 82 



Rhus aromatica, Ait. t var. trilobata, Gray 84 



diversiloba, T. & G 42 



glabra, L ,.* 84 



integrifolia, Benth. &Hook 84 



Toxicodendron, L 84 



trilobata, Nutt 84 



virens, Lindl 84 



Rhynchosia 86 



Texana, Torr 104 



Ribes aureum, Pursb, var. tenuiflorirm, Torr 118 



cereum, Dougl 118,361 



lacustro, Poir., var. setosum, Gray 117 



leptanthum, Gray 117 



Menziesii, Pursb 361 



oxycanthoides, L 117 



sanguineum, Pursh, var. variegatum, "Watson . 118 



Unuiflorum, Lindl ng 



viscosissimmn, Pursb ng 



Ribes "Wolfii, Rothrock us 



