INDEX 



1057 



Phacelia— Continued. Page 



popei 736 '732 



pulchella 733 (731) 



ramosissima 73 r > I 732 



rotundifolia 733 (731) 



rupestris 736 



saxicola 734 (731) 



sericea 734 (731 



serrata 736(732 



tanacetifolia 735 (732 



vallis-mortae 735 (732 



Phalaris 140(80.141) 



Phanerophlebia 29 (26) 



Pharnaceum--- 296 



Phaseolus 503 (431) 



acutifolius 504 



angustissimus 505 (21, 504) 



atropurpureus 504 (503) 



dilatatus 505 



grayanus 505 



heterophvllus 504 (503) 



lunatus 503 



macropoides 504 



metcalfei 505 (503) 



multiflorus 503 



parvulus 504 503 



retusus 50" 



ritensis 504 (503' 



rotundifolius 501 



tenuifoiius 504 



vulgaris . r 03 



wrightii 505 (504. 1035) 



Phegopteris 29 



Phelipaea 837 



Phellopterus 652 



Phellosperma 605 



Pherotrichis 697 (687) 



Philadelphia 382 (378) 



Phleum 113(23,81) 



Phlox 712 



acerba 714 



amabilis 716(713) 



austromontana 713 (712 



caesia * 713 



caespitosa 713 (712) 



clutena 714 713/ 



eovillei 714 712 



densa 714 



diffusa 714 (713) 



gilioides 714 



gladiformis 713 (712) 



gooddingii 713 



grayi 716 



hoodii 714 (713) 



humilis 715 



linearifolia 715 



longifolia 715 (713, 716) 



muscoides 714 



nana 715 (713) 



nelsonii 715 



speciosa 715 



stansburvi 715 (713,716) 



tenuifolia 714 (712,713) 



triovulata 715 



tisenda 716 



woodhousei 715 (713) 



Pholistoma 729 



Phoradendron 232 (231) 



Phragmites 97 (82) 



Phyla 766 



Phymatotrichum 566 (789) 



Phymosia 572 



Physalis... 790 (786) 



Phvsaria 357 (338) 



Physocarpus 390 (389) 



Physostegia 775 



Phytolacca 295 



Phvtolaccaceae 295 (48,49) 



Picea 63 (22,59,66) 



Picradenia 986 (987) 



Picradeniopsis 983 



Picrothamnus 1003 



Pilostvles . 235 (7) 



PimpineUa 645 (647) 



Pinaceae 5s (45 



Pinaropappus 1024 (872) 



Pinus 59 



apacheca 63 



aristata 61 (60) 



arizonica 63 (20,60 



Pinus— Continued. Page 



brachyptera 62 



cembroides 61 (19,20,59.60,' 



chihuahuana.. 62 



edulis 61 (17.20,59,60) 



flexilis 61 (22,60) 



lasioca rpa 66 



latifolia 63 (20,60) 



leiophylla 62 (20,60) 



mayriana 63 



monophylla 61 (59,60) 



palustris 63 



ponderosa 62 (20,59,60) 



renaa 62 



strobiformis 62 (20,60) 



Piptochaetium 124 (81) 



Piptohpis 673 



Piptothrix 886 



Piqueria 870 



Pisophaca 482 



Pistia 175 



Pityrogramma 34 C27) 



Plagiobothrys 757 (741) 



Plantaginaceae 842 (58) 



Plantago 842 



argvraea 845 (844) 



eriopoda 844 (843) 



fastigiata 845 (843) 



heterophvlla 844 (843) 



hirtella 844 (843) 



hookeriana 845 



ignota 845 



insularis 845 



lanceolata 844 (843) 



major 844 (843) 



pida 845 



psyllium 843 



purshii 844(843,845) 



rhodosperma 844 (843) 



virginica 844 (843) 



wrightiana 845 (844) 



xerodea 845 



Platanaceae 387 (51) 



Platanthera 209 



Platanus 387 (15,20) 



Platyschkuhria 982 



Platvstemon 334 



Plectritis 859 (858) 



Pleuraphis 131 (132) 



Pteurophragma 342 



Pluchea 934 (13,875,876) 



Plumbaginaceae 669 (57) 



Plumbago 669 



Plummera 990 (879.883) 



Poa 90 (83) 



annua 91 (90) 



bigelovii 91 (90) 



canbyi 93 



compressa 91 (90) 



curvula 95 



fendleriana 92 (21.91) 



glaucifolia 91 (90) 



interior 92 (91) 



longiligula 92 (91) 



mexicana 95 



nevadensis 92 (91) 



palustris 92 (91) 



pectinacea 94 



p ilosa 94 



pratensis 91 (90) 



reflexa 92 (91) 



rupicola 92 (23.91) 



spedabilis 95 



striata 90 



Podosaemum 115 (117.119.120) 



Poinciana 



Poinsettia 535 (539) 



Polanisia 373 (371) 



Polemoniaceae 711 " 38 



Polemonium 726 (23,712) 



Poliomintha 7S3 (16,767) 



Polvgala - 520 (519) 



acanthoclada 522 (521) 



alba S23 - 



arizonae 



barhevana 



glochidiata 



hemipterocarpa 52 



longa 



macradenia 521 (520) 



