INDEX. 



519 



Phacelia humilis, T. & G 250 



integrifolia, Torr 250 



Ivesiana, Torr 254 



Meuziesii, Torr 252 



Palmeri, Torr 251 



pusilla, Torr 253 



rotundifolia, Torr 253 



serioea, Gray 252 



tanacetifolia, Benth 251 



Phalaris arundinacea, L 393 



intermedia, Boso 393 



Phelipoea comosa, T. & G 215 



erianthera, Eng 215 



Ludovioiana, Walp 215 



Philonotis calcarea, Br. & Sch 407 



fontana, L 407 



. Phleum alpinnm, L 375 



pratense, L 375 



Phlox, L 462 



adsurgens, Torr 464 



amcena, Sims 462 



bifida, Beck , 463 



bryoides, Nutt .^ 463 



csBspitosa, Nutt 259,463 



canesceus, T. &G 259,463 



divaricata, L 462 



Douglasii, Hook 260,463 



Dmmmondii, Hook 464 



Floridana, L 462 



glaberrima, L 462 



Hoodii, Rich 463 



linearifolia. Gray 464 



longifolia, Nutt 260,464 



maculata, L 462 



muaooides, Nutt 463 



nana, Nutt 464 



ovata, L 462 



panioulata, L 462 



pilosa, L 462 



reptans, Mx 463 



Eichardsonii, Hook 463 



Eoemeriana, Soheele 464 



Sibirica, L 463 



speciosa, Pursh 464 



SteUaria, Gray 463 



subulata, L 463 



Phceuicaulis cheiranthoides, Nutt 14 



Phragmites communis, Trin 390 



Physalis pubesoens, Willd. 274 



Physaria, Nutt 20 



didymooarpa. Gray 20 



Physcia obscura, Nyl 412 



BteUaris, (L.) 412 



Physoomitrium pygmasum, James 404 



pyriforme, 404 



Picrofhammis desertorum, Nutt 180 



Pimpinella, L 121 



apiodora, Gray 121 



Pinus amaUlis, Dougl 333 



«nstoto, Eng 332 



Pinus Balfouriana, Murr 331 



Bolanderi, Fail , 330 



commutata, Pail 332 



coutorta, Dougl 330 



Douglasii, Sabin 334 



eduli8,Eng 330 



flexilis, James 332 



graniis, Dougl 334 



Menziesn,T)oug\ 333 



monophylla, Torr 330 



ponderosa, Dougl 331 



Piptooalyx, Torr 240 



oircnmsoissns, Torr 240 



Pi8onla,L 475 



aculeata, L 475 



obtusata, Sw. ..^ 475 



Placodium ceriuum, N»g. & Hepp 412 



elegans, Link 412 



fulgens, DC 412 



vitellinnm, Naeg. & Hepp 412 



Plagiobotrys canescens, Benth 244 



PLANTAGINACBiE 212 



Plantago Bigelovii, Gray 212 



eriopoda, Torr 212 



Patagonioa, Jacq 213 



pusilla, Nutt 213 



Platanthera fmlida, Gey 341 



Platyspermum, Hook 20 



scapigerum. Hook 20 



Plectritis, Lindl 136 



congesta, DC 136,422 



Pleuraphis, Torr 381 



Jamesii, Torr 381 



Poa alpina, L 386 



Andina,Nutt 388 



annua, L , 385 



arctica, E.Br 386 



cassia, Sm 386 



Eatoni, S. "Watson 386 



flexuosa, Muhl 386 



Ballii, Godet. 386 



Kingii, S.Watson 387 



laxa, Hsenkc -.. 386 



nemoralis, L 386 



serotina, Ehrh 386 



tenuifolia, Nutt 387 



PsBonia, L 12 



Brownii, Dougl 12 



Polanisia tracTiysperma, T. & G 34 • 



uniglandulosa, DC 34 



POLBMONIACEiE 259,462 



Polemonium, Tourn 462,470 



CEeruleum,L 272,470 



confertum. Gray 271,470 



humile, Willd 470 



micranthum, Benth 272, 470 



reptans, L 470 



viscosum, Nutt 470 



procumbens, Clairv 89 



pulcherrima, Lehm 87 



