1056 



INDEX 



Page 



Palmae. 175 (46) 



Palmcrocassia --- 424 



Panax 638 



Panicularia. 89 (90) 



Panicum 143 (79) 



arizonicum , 145 (144) 



barbipulvinatum 145 



bulbosum. 146 (21, 144) 



californicum 141 



capillare 145 (144) 



cognatum 142 



colonum 147 



crusgalli 147 



dactylon 134 



dichotomiflorum 145 (144) 



fasciculatum 145 (144) 



hallii 146 (144) 



hirticaule 145 (144) 



huachucae 14fi (144) 



lepidulum 146 (144) 



lutescens 148 



obtusum 147 (144) 



pampinosum 145 (144) 



plenum 146 (144) 



sanguinale 141 



scheelei 149 



scribnerianum 146 (144) 



stramineum 145 (144) 



tennesseense 146 (144) 



texanum 145 (144) 



urvilleanum 146 (144) 



virgatum 147 (144) 



viride 148 



Papaver 334 



Papaveraceae 334 (50, 53, . r 4) 



Papaveroideae 334 



Papilionoideae 428 (412) 



Pappophorum 99 (82) 



Parietaria 231 (230) 



Parkinsonia 425 (421,426) 



Parnassia 382 (378) 



Paronychia 312 (303. 1035) 



Parosela 457(458-462) 



Parryella 451 (16,429) 



Parsonsia 620 



Parthenice 942 (873) 



Parthenium 942 (870,880) 



Parthenocissus 560 



Paspalum 143 (79) 



Passiflora 588 



Passifloraceae 588 (52) 



Pastinaca 656 (641) 



Pectis 994 (878.879,882) 



Pectocarva 744 (740) 



Pedicularis . 832 (23,800) 



Pediomelum 450 (451) 



Pellaea 38 (27) 



Peniocereus 595 



Pennellia 342 (340) 



Penstemon 806 (9,801) 



aggregates 815 



albomarginatus 814 (808) 



ambiguus 816 (809) 



amplus 810 



angustifolius 813 (808) 



arizonkus 811 



barbatus 810 (21,806) 



bicolor 813 (807) 



bridgesii 810 (806) 



caespitosus 814 (808) 



caudatus 814 



centranthifolius 811 



clutei 812 (807) 



cobaea 812 (807) 



coccinatus 810 



comarrhenus 817 (809) 



congestus 813 



connatifolius 813 



crideri 813 



dasyphyllus 816 (809) 



desertipicti 814 



discolor 816 (808) 



eatoni 810 (806) 



exsertus 810 



fendleri 813 (807) 



hallii 817 



hansonii 812 



jamesii 812 (807) 



laevis 817 (809) 



Penstemon— Continued. Page 



lanceolatus 809 (806) 



leiophyllus 817 



lentus 814 (808) 



linarioides 815 (22,808) 



metcalfei 811 



microphyllus 809 (806) 



minis 810 



nudiflorus 813 (807) 



oliganthus 814 (808) 



ophianthus 812 



pachyphyllus 813 (807) 



palmeri 812 (807) 



parryi 811 (807) 



petiolatus 812 



pilosigulatus 812 



pinifolius 809 (806) 



plummerae 809 



pseudospectabilis 812 (807) 



pulchellus 812 



pumilus 814 



puniceus 811 



putus 817 



rubescens 816 



rydbergii 815 (808) 



scoparius 816 



shantzii 811 



spectabilis 813 



stenophyllus 816 (809) 



stenosepalus 811 



strictiformis 817 



strictus 817 (809) 



subulatus 810 (806) 



superbus 811 (807) 



thompsonae 814 (808) 



thurberi 816 (808) 



torreyi 810 



trichander 810 



utahensis 811 (806) 



virgatus 817 (22,809) 



■watsoni 815 (808) 



whippleanus 811 (23,807) 



Pentstemon 806 



Peramium.j 211 



Peraphyllum 394 



Perezia 1018 (871) 



Pericome 974 (874) 



Perideridia 647 (641) 



Peritoma 371 (372) 



Perityle 971 (874,882,883,973) 



Persicaria 258 (260, 261) 



Petalonyx_ 589 



Petalostemon 462 



Petalostemum 462 (430) 



Peteria 465 (431) 



Petradoria 902 



Petrophyton 390 



Petunia 799 (786) 



Peucedanum 652 (654-656) 



Peucephyllum 1004 (873, 876) 



Phaca 468(482-485) 



Phacelia 730(728) 



affinis 734 (731) 



ambigua 737 



arizonica 736 



bicolor 734 (731) 



biennis 735 



coerulea 736 (733) 



congesta 736 (732) 



corrugata 736 (733) 



crenulata 737 (730, 733) 



cryptantha 735 (732) 



curvipes 734 (731) 



demissa- 734 (731) 



distans 735 (732) 



filiformis 733 (730) 



frem6ntiL- 734 (731) 



glechomaefolia . 733(730) 



heterophylla 735(21,731) 



integrifolia 735 (732) 



intermedia 737 



ivesiana 734 (731) 



laxiflora 1036 



lemmoni 733 (730) 



micrantha 730 



minutiflora 737 



neomexicana 736 (732) 



pachyphylla -— 733(730) 



palmeri 7ao \I6Z) 



pedicellata 736 (730, 733) 



