1058 



INDEX 



Polygala— Continued. Pa ^ e 



obscura 522 (520; 



orthotricha 522 (520 



parvifolia 522 



piliophora 521 (520 



puberula 522 



racemosa 521 (520 



reducta 522 (520 



rusbyi 522 (521 



scoparioides 523 (521 



subspinosa 522 (521 



tweedyi 522 (521 



Polygalaceae 519 (50,55; 



Polygonaceae 236 (1,49,50 



Polygonum 257 (236 



amphibium 260 (258 



argyrocoleon 259 (258 



aviculare - 259 (258; 



bistortoides 260 (258 



buxiforme 259 



coccineum 260 (258 



convolvulus 259 (258 



douglasii 259 (258 



fusiforme 261 (259 



incanum 261 (259 



lapathifolium 260 (258; 



muhlenbergii 260 



neglectum 259 



pennsylvanicum 261 (259 



persicaria 261 (259 



punctatum 261 (259 



ramosissimum 260 (258 



sawatchense 259 (258 



viviparum 260 (258 



watsoni 259 (258 



Polypappus 93 



Polypetalae 50 (45 



Polypodiaceae 26 (24 



Polypodium 28 (26,29,30,31,33 



Polypogon 112 (81 



Polystichum 28 (26 



Pomatophytum 3 



Pontederia 17 



Pontederiaceae 178 (47 



Populus 214 (13,15,20,21,22 



Porophyllum 993 (876 



Porterella 869 (866 



Portulaca 301 (297,298 



Portulacaceae 297 (51,54 



Potamogeton 7; 



Potentilla 397 (389,390 



albiflora 403 (399 



anserina 400 (398 



arguta 399 (397; 



arizonica 40 



atrorubens 40 



biennis 401 (398 



concinna 402 (399; 



concinnaeformis 402 



convallaria 399 



crinita 401 (398 



diversifolia 402 (23,399 



fruticosa 399 (397 



glandulosa 400 (398 



glaucophylla 402 



hippiana 402 (399; 



lemmoni 40 



millegrana 40 



modesta 402 



monspeliensis 401 (398 



multifoliolata 400 (398 



pectinisecta 402 (399 



plattensis 401 (398; 



propinqua 402 



pulcherrima 402 (398; 



ramulosa 403 



rivalis 401 ( 



sabulosa 400 (398 



sanguinea ■_ 



sibbaldi 400 (23, 



subviscosa 403 (21,399 



thurberi ■_ 400 (21, 



viscidula 402 



wheeled 402 (399 



Prenanthes 1022 (1030 



Primula 665 (23 



Primulaceae 664 (57 



Proboscidea 835 ( 



Prosartes . _ 20 



Prosopis 419 (13,14,413,1035 



Page 



Prunella 775 (768) 



Prunus 410 (388) 



Psathyrotes 1004 (876,983) 



Pseudocymopterus 653 (23,641) 



Pseudotsuga 64 (21,22,59) 



Psilactis 913 (877) 



Psilostrophe „ 969 (882) 



Psoralea 450 (21,429,459,460) 



Psoralidium 451 



Psorodendron 456 (457) 



Psorothamnus 457 



Ptelea 516 (514) 



Pteridium 34 (21,27) 



Pteridophyta 24 



Pteris 34 (37,39,40) 



Pterophacos 480 



Pterospora 660 (659) 



Pterostegia 236 



Pteryxia 653 (641) 



Ptiloria 1021 (1022) 



Puccinellia 89 (83) 



Purpusia 403 (389) 



Purshia 408 (390) 



Pyrola 661 (660,662) 



Pyrrhopappus 1031 (872) 



Pyrrocoma 905 



Quamortidion 287 



Quamoclit 709 



Quercus 223 



arizonica 225 (19,223,224) 



chrysolepis _, 227 



diversicolor 224 (21) 



dumosa 225 



durangensis 224 



emoryi 227(19,223) 



fendleri 226 



gambelii 227 (19,20-22,223,224) 



grisea 225 (224) 



gunnisonii 227 



hastata 227 



hypoleuca 227 



hypoleucoides 227 (21,223) 



novamexicana . 227 



oblongifolia 225 (224) 



obtusifolia 226 



palmeri 227 (19,223) 



pau ciloba 226 



pungens . 226 (224) 



reticulata 224 



submollis 227 



subobtusifolia 226 (224) 



subturbinella 225 



toumeyi 225 (224) 



turbinella 225 (18,223,224) 



undulata 226 (224) 



utahensis 227 



vaseyana 226 



wilcopii 227 



Ouincula 792 



Radkula 354 (355,356) 



Rafflesia 236 



Rafflesiaceae . 235 (7,48) 



Rafinesquia 1023 



Raimannia 625 



Ranunculaceae 315 (48,50,53,54) 



Ranunculus 326 (316) 



affinis 330 



alismaefolius 331 



andersonii 328 



aquatilis 328 (327) 



arizonicus 331 (328) 



bongardi 331 



cardiophyllus 330 (328) 



circinatus 328 



cymbalaria 328 (327) 



ellipticus 330 



eremogenes 329 



eschscholtzii 330 (23,327) 



eximius 330 



filiformis 329 



flammula 329 (327) 



glaberrimus 330 (327) 



hydrocharoides . 329 (327) 



inamoenus 330 (327) 



juniperinus 328 (327) 



longirostris 328 



macounii : 329 (327) 



macranthus 329 (327) 



nudatus 331 



