INDEX 



Poplar, T&S, 20 

 POPULUS, T&S, 20 

 Poppy, F, 38 

 Poppymallow, F, 66 

 Poreleaf, F, 120 

 POROPHYLLUM, F, 120 

 PORTERELLA, F, 102 

 PORTULACACEAE, F, 31 

 PORTULACA, F, 32 

 POTAMOGETON, F, 3 

 POTAMOGETONACEAE, F, 3 

 POTENTILLA, F and T&S, 50 

 anomalofolia, F, 51 

 ANSERINA, F, 50 



concolor, F, 50 



sericea, F, 50 

 ARGENTEA, F, 50 

 ARGUTA 



CONVALLARIA, F, 50 

 arizonica, F, 51 

 baileyi , F, 50 



setosa , F, 50 

 BIENNIS, F, 50 

 BREVIFOLIA, F, 50 



perseverans, F, 50 

 BREWERI, F, 51 

 bruceae, F, 51 

 brunnescens, F, 51 

 Candida, F, 51 

 chrysantha, F, 51 

 CONCLNNA, F, 51 



DIVISA, F, 51 



RUBRIPES, F, 51 

 concinnaeformis, F, 51 

 convallaria , F, 50 

 CRINITA, F, 51 



LEMMONI, F, 51 

 ctenophora, F, 51 

 diffusa, F, 51 

 dissecta , F, 51 



glaucophylla, F, 51 



multisecta, F, 51 

 DI\'ERSIFOLIA, F, 51 



MULTISECTA, F, 51 



pinnatisecta , F, 51 

 divisa, F, 51 

 DRUMMONDII, F, 51 



BRUCEAE, F, 51 

 effusa, F, 51 

 elmeri, F, 51 

 eremica, F, 50 

 fastigiata, F, 51 

 filipes, F, 51 

 FRUTICOSA, T&S, 51 

 glabrata, F, 51 

 glabrella, F, 51 

 GLANDULOSA, F, 51 



ARIZONICA, F, 51 



glabrata, F, 51 



INTERMEDIA, F, 51 



MICROPETALA, F, 51 



NEVADENSIS, F, 51 



PSEUDORUPESTRIS, F, 51 



REFLEXA, F, 51 

 glaucophylla, F, 51 

 glomerata, F, 51 

 gordonii, F. 50 

 GRACILIS 



BRUNNESCENS, F, 51 



ELMERI, F, 51 



filipes, F, 51 



FLABELLIFORMIS, F, 51 



GLABRATA, F, 51 



nurtallii, F, 51 



PULCHERRIMA, F, 51 

 HIPPIANA, F, 51 



diffusa, F. 51 

 humifusa, F, 51 

 intermittens, F. 51 



jucunda, F, 51 



kingii , F, 50 



klamathensis, F, 51 



laterifolia , F, 50 



lemmoni, F, 51 



leucocarpa, F, 51 



leucophylla, F, 51 



macdougalii, F, 51 



MILLEFOLIA, F, 51 



KLAMATHENSIS, F, 51 



millegrana, F, 51 



modesta, F, 51 



monspeliensis, F, 51 



multisecta, F, 51 



nelsoniana, F, 51 



NEWBERRYI, F, 51 



nipharga, F, 51 



NTVEA, F, 51 



quinquefolia, F, 51 



NORVEGICA, F, 51 

 monspeliensis, F, 51 



nurtallii, F, 51 

 glabrata , F, 51 



osterhoutii, F, 52 



OVTNA, F, 51 



PALUSTRIS, F, 51 



PARADOXA, F, 51 



pectinisecta, F, 51 



PENSYLVANICA 

 STRIGOSA, F, 51 



pensylvanica, F, 51 



pinnatisecta , F, 51 



PLATTENSIS, F, 51 



propinqua, F, 51 



proxima, F, 51 



pseudorupestris, T&S, 51 



pulcherrima, F, 51 

 filipes, F, 51 



purpurascens, F, 50 



QUINQUEFOLIA, F, 51 



reflexa, F, 51 



RIVALIS, F, 51 



MILLEGRANA, F, 51 



rubricaulis, F, 51 



rubripes, F, 51 



sabulosa, F, 50 



SAXOSA 



SIERRAE, F, 51 



strigosa, F, 51 



utahensis, F, 50 



virgulata , F, 51 



webberi, F, 50 

 Poteridium, F, 52 

 Prenanthella , F, 118 

 Prickly- 

 currant, T&S, 48 



lettuce, F, 118 



oxytenia, T&S, 120 



pear, T&S, 69 



poppy, F, 38 



sowthistle, F, 123 

 Primrose, F, 78, 79 

 PRIMULA, F, 79 

 PRIMULACEAE, F, 78 

 Princesplume, F, 45 

 PROBOSCIDEA, F, 99 

 Prosartes , F, 17 

 PROSOPIS, T&S, 52 

 PRUNELLA, F, 92 

 PRUNUS, T&S, 51 

 PSATHYROTES, T&S, 120 

 Psedera , T&S, 66 

 PSEUDOCYMOPTERUS, F, 77 



aletifolius , F, 74 



anisatus , F, 74 



longilobus , F, 74 



bipinnatus , F, 74 



hendersonii, F, 74 



MONTANUS, F, 77 



multifidus, F, 77 

 nivalis, F, 74 

 purpurens, F, 77 

 sylvaticus, F, 77 

 tenuifolius, F, 77 

 tidestromii, F, 77 

 versicolor, F, 77 

 Pseudopteryxia, F, 74 

 Pseudoreoxis, F, 74 

 PSEUDOSERICEA, F, 51 

 PSEUDOTSUGA, T&S, 3 

 PSILACTIS, F, 120 

 PSILOCARPHUS, F, 120 

 PSILOSTROPHE, F, 120 

 PSORALEA, F, 62 

 Psoralidium, F, 62 

 Psorodendron, T&S, 59 

 PTELEA, T&S, 64 

 PTERtDIUM, F, 2 

 PTERIDOPHYTA, F, 1 

 Pterochiton , F, 28 

 Pterophacos, F, 58 

 PTEROSPORA, F, 77 

 PTEROSTEGIA, F, 27 

 Pteryxia 



albiflora , F, 74 

 anisatus, F, 74 

 calcarea , F, 74 

 californica, F, 75 

 hendersonii, F. 74 

 petraeus. F, 74 

 terebinth ina 



albiflora, F, 74 

 calcarea, F, 74 

 californica, F, 74 

 Ptilocalais , F, 119 

 Ptilonella , F, 106 

 Ptilophora , F, 119 

 Ptiloria , F. 123 

 PUCCINELL1A, G, 6, 7 

 Pulsatilla , F, 35 

 Puncture -vine, F, 64 

 PURPUSIA, T&S, 52 

 PURSHIA, T&S, 52 

 Purslane, F, 32 

 Pussypaws, F, 32 

 Pussytoes, F, 103 

 Pycnosphace, T&S, 92 

 PYROLA, F, 77 

 PYROLACEAE, F, 77 

 Pyrrocoma 



acuminata , F, 115 

 apargioides, F, 115 

 argurus, T&S, 116 

 cheiranthifolia, F, 115 

 dementis, F, 115 

 crepidinea, F, 116 

 croceus, F, 115 

 cusickii, F, 115 

 demissa, F, 115 

 duriusculus, T&S, 116 

 eriopodus, T&S. 116 

 glomerata, T&S, 116' 

 hirtus , F. 115 

 hololeuca, F, 116 

 insecticruris, F, 115 

 inuloides, F, 116 

 kennedyi, F, 115 

 lanceolata, F, 115 

 lapathifolia , F, 115 

 lyallii , F, 116 

 microdonta, T&S, 116 

 pratensis, F. 115 

 prionophylla, T&S, 116 

 radiatus, T&S, 116 

 sericea , F, 116 

 sessiliflora, T&S,' 116 

 solidaginae , F, 115 

 subcaesia, F, 115 



subviscosa, F, 115 

 tenuicaulis, F, 115 

 uniflora, F, 116 

 vaseyl, F, 115 



Quack Grass, G, 7 

 Quamasia, F, 17 

 Quamoclidion , F, 31 

 QUERCUS, T&S, 21 

 Quickweed, F, 114 

 Quill wort, F, 2 



Rabbitbrush, T&S, 108 

 Rabbitfoot Grass. G, 10 

 Radicula, F, 43, 44 

 RAFINESQUL\, F, 120 

 Ragweed, F, 103 

 Ragwort, F, 120 

 RaiUardia , F, 120 

 Raimannia, F. 72 

 Ramischia, F. 77 

 Ramona , T&S, 92 

 RANUNCULACEAE, F, 37 

 RANUNCULUS, F, 37 

 Raspberry, T&S, 52 

 RATIBIDA, F, 120 

 Rattlesnake Plantain, F, 19 

 Razoumofskya, F, 21 

 Redbud, T&S, 52 

 Red Sage, F, 29 

 REDFIELDIA, G, 6 

 Reed-- 



bur, GL, 3 

 common, G, 6 

 grass, G, 9 

 Rein Orchid, F, 19 

 Resinweed, F, 114 

 RESEDACEAE, F, 46 

 Reseda, F, 46 

 REVERCHONIA, F, 65 

 RHAMNACEAE, T&S, 52 

 RHAMNUS, T&S, 66 



Rhodiola. F. 46 



RHUS, T&S, 65 



RHYSOPTERUS, F. 74, 77 



RIBES, T&S, 48 



Ricegrass, G. 10 



Riddellia , F, 120 



RIGIOPAPPUS, F, 120 



Ring -grass, G, 10 



ROBINIA, T&S, 62 



Rock-- 



brake, F, 1 

 cress, F, 39 

 jasmine, F, 78 

 mat, T&S, 50 

 nettle. T&S, 68 

 purslane. F. 31 



Rocket Salad, F. 42 



ROEMERLA, F, 38 



Rompelia. F, 73 



RORIPPA, F, 43. 44 



ROSA, T&S, 52 



ROSACEAE, T&S, 49 



Rose, T&S, 52 

 mallow, F, 66 

 marymint, T&S. 92 



RUBIACEAE, F, 100 



RUBUS, T&S, 52 



RUDBECKIA, F, 120 



Rue Family, F, 64 



RUMEX, F, 26. 27 



RUPPIA, F, 4 



RUPPIACEAE, F, 4 



Rush, GL, 15 



Rushpea, T&S, 52 



Russian Olive, T&S, 70 



Russian Thistle, F. 30 



RUTACEAE, F, 64 



158 



