INDEX. 



1073 



Poly podium lielleri Underw 785 



- — hUlebravdii Book 782 



— honohdense Hook 782 



bookeri Brack 785 



lineareTHONB 785 



— paraMticum Jj 780 



pellucidum Kaulf 7C7, 784, 785 



pulycariitun II, and A 783 



- — pseudo-garmmitis Gaud 785 



— punctatum Tbunb Ts;; 



samoense Baker 786 



sarmentosum Brack 7*0 



serrulatum (Bwabtz) Mett 7S6 



— spectrum Kaulf 786 



— stenogramnioidea Baker 783 



tamariscinuin Kati.f 784. 788 



unidentatum H. and A 7*4 



unitum L 781 



vulgareL 1'64, 101(3 



Polypogon Desv 798 



— littoralls Sm 798 



Polyporei 935 



Polyscytalum Ries8 651 



Polythrincium K/.E.and Scum 655 



Polytricbum 1011 



commune L 269,581, 593 



formosum IIedw f>9:( 



gracile Mksz 289 



juniperinuin Willd 289,581. 593 



— piliferuro Schbeb 289, 741 



strictum Banks 289 



strictuni Menz. 741 



Pontederia cordata L 531 



Pontederiaceae 531 



Populus ..459. 472. 701, 975, 978. 981, 983, 



985, 986, 987, 991, 993, 1001. 1006. 



1007, 1009, 1012. 



— balsamlfera L 964,974, 



deltoidea Makfh. ... 964, 974, 983, 



grandidontata Michx 



tremuloid< 3 Micbx.83.84,869,964, 



966, 969, 977, 974, 975, 983, 989, 990, 



1009,1010, 



Porella pinnata Schwaegr 



platy phylla Lindb 



Porphyrosiplion notarisil Kg 



Portulaea L 



oleracea L 



Portu lacaceae 539, 



Potamogetnn L 793,998,1004, 



am pi i foli us TUCKERM 



fluitans Roth 



foliosus Kaf 793, 964, 



graminpum L 



heteropli v llus Schreb 964, 



— heteropbyllus sciiheb. forma 



myriopliyllus (Bobbins.) 

 MORONG 14, 



lllinoensis Morong 



major (Er.) Morong 



— natans L 



— pauciJloruA Pursh 



pectin atus L 



— perfoliatus L 



— perfoliatus var. ricbardsonii 



Benn 064, 



pusillus L 



robbinsii Oakes 223, 



rutilus Wolfo 



— vaseyi Bobbins 



zoster aefoli us Schumacher... 5, 



Potentilla 983, 



argentea L 



arguta Pursb 647, 965 970, 989, 



canadensis L 



chrysantha Lehm 



— ohrysantba Trev 



fruticosa L 



gracilis Dougl. var. nuttallil 



(Lfhm.)Sheld 



gracilis DOUGL. var. rf gkla WATS, 



millegrana Encei.m 



monspeliensis L 



nicolletii (Wats.) Sheld 



nuttaUii Lehm 



palustris (Linn.) Scop 



1014 

 983 



984 

 530 



1018 

 461 

 461 

 235 

 S23 

 823 



1018 

 520 

 520 

 988 

 793 



66 

 223 



66 



1002 



793 



520 



520 



520 



520 



66 



223 



520 



991 



547 



1016 



547 



71 



71 



547 



71 



71 



547 



547 



16 



71 



3 



Potentilla pennsylvanica L 547 



riuida Nutt 71 



— rigida Wall 71 



supina Linn 16 



— supina Linn. var. nicolletii Wats. 16 



— trident at a Soland 547 



Prastum gramdljlorum Gaud 682 



Preis-ia bemispberica Cogn 461 



Pre n ant lies alba L 574 



japanica L 922 



— racemosa Mkhx 574 



Piimula farinosa L 559 



Prlmulaceae 559, 874 



Prot -i l« glabra H. & A 816 



Prosopis L 766. 831 



dulcis Kunth 831 



juli flora DO 831 



Protococcus cinnamomeus Kg 233 



— inf usionum (Scbbank) Kibchn. 233 

 iiifusiouuni (SCHRABK) K'ho'iin. 



var.roernerianum (K'o.jIIansg. 233 



viridisAc 233. 598 



Pruneila vulgaris L 563 



Prunus 071, 991 



— am erica a a Marsh 548 



pennsylvanica L 549 



pumila L 549. 965, 969, 970, 971. 



972, 979, 989, 990, 992, 1010 



serotina Ehuh 466, 467, 468, 474 



Pseudoleskea rigescens Lindb 741 



Psidium L 868 



gUHjava L 868 



Psiiopezia Bekk 486, 5(K) 



oabDimgtonii 487 



— flavida B.&C 500 



mirabilis B. & C 500 



nummularis Berk 486, 500 



Psilotum Swartz 792 



complanatum Swartz 792 



nudum (L.) GimsB 792 



triquetrum Swartz 792 



Psoralea argophylla Pursh 549 



— esculenta Pursh 549 



— longifolia Pursh 19, 137 



— parviflitra Pont 58, 157 



ten ui flora Pciisn 72 



Psycbotria L 902, 905 



bexandra Mann 902 



hirta ( Wawra) Heller 903 



Pteris L 786 



aquilina L 786 



decipiens Hook 7>7 



— decora ( Brack.) Hook 767 



excelsa Gaud 787 



irregularis Kaulf 787 



regularis E. Bailey 787 



Pterotrnpia Hiilebr 870 



— dipyrena Hillf.br 870 



— oymnocarpa Hillebr 870 



■ — kauaiensis Hillebr 871 



Ptilidium ciliare Nees 461, 580 



Ptilotua saiiiheiensis A. Gray 821 



Ptycboverpa COUD 485 



Puccinia 647 



Cypripedii Arth. and Holw 426 



grnminis.. 938 



Pulsatilla birsutissima (Pursh) 



Britt .. 541 



Pylaisia intricataScH 291, 594 



polyantba B. 8 582 



veiutinaScH 291 



Pyrenula 704 



leucoplaca (Wallr.) Kbr 725 



nitida ACH 725 



punctiforrnis (Acn.) Naeg 725 



thelena Ach 725 



Pyrola 967,976,1021 



cblorantba Swartz 557 



— elliptica Nutt 557 



minor L 557 



l'otundifolia L 557 



rotundifolia L. var. incamata 



DC 557 



rotundifolia var. pumila HOR- 



nem 557 



— secunda L 557 



