INDEX. 



395 



Tagc. 



Pbascolus Wrightii, Gray 103 



Phegoptoris alpeatris. Mitt 331 



Dryopteris, Ko 332 



licxagonoptera., Poo 332 



polypodioides, Fee 305,332 



Pbilibcrtia rynancboides, Gray 1S7 



linearis, var. heterophylla, Gray 187 



Philonotis cab-area, Brch. &Sch 347 



fontana, (L.) Brid 347 



fontana, (L.),var. gracilis 347 



uniii-hiea, Prill 347 



Phlcum alpinum, L 2S1 



Phlox csespitosa, Xutt 197 



Douglasii, Hook 197 



longifolia, Xutt 197 



longifolia, Xutt., Tar. Stansburii, Gray 197 



nana, Xutt 197 



Phoradendron Calil'ornieum, Xutt 252 



llave.si.CDS, Nlltt 251 



II. jv. si ins, Xutt., var. macropbyllinn, 



Eugelra 252 



flavescens, Xutt., var. orbieutatum, 



Engelm 252 



flavescens, Xutt., var. villosum, 



Engelm 252 



juniperinum, Engelm 252 



villosum, Xutt 252 



Photinia urbutijoUa, X. & G 361 



Phragmites commonis, L 293 



1'bysalis lobata, Ton 208 



viseosa, L 208 



Physaria didymocarpa, Gray 02 



Physcomitrium latitblinm, Drum 344 



PHYTOLACCACEiE 228 



Picea Engeliuanni, Engelm 18, 256 



Pine (Piflon) 21 



(Wbite) 37 



Pinna albicaulis 258 



Arizonica, Engelm 260 



Ayacabuito 258, 259 



Balfouriana, Murr 8,9 



Balfouriana, Murr., var 375 



Banksiana, Lambert 263 



llolanderi, Parlat 263 



Bungcana, Zucc 260,262 



cembroides, Zucc 260 



Chiliuahuana, Engelm. 262 



commutata, Parlat 256 



contorta, Dougl 7, 8 



contoi ta, Dougl., rar. latifulia, Engelm 202 



deflcxa, Torr 261 



eilulis, Bngolm 6,9,260 



excelsa 259 



flcxilis 9,257,258,375 



flcxilis, James, Tar. p. macroearpa, Engelm 258 



tbxilis, .Tames, var. a. Re rrulata, Engelm 258 



flcxilis, James, var. v- lellcxa, Engelm 258 



Frcmontii, Endl 259 



Halepensis 263 



Hartwcgii 261 



innps, Ait 263 



KoraicDsis 258 



Lambcrtiana 259 



Ufandachnrioa 258 



monopb yllus, Terr. & Frem 259, 375 



Honteznmie 261 



Tagc. 



Pinus montieola 259 



Murrayana, Balf 262 



Parryana 260 



parviilora 259 



Pcuco 259 



pondcrosa, Dougl 7,9,21,25,361,375 



pygmaea 258, 259 



Sa 1 liana, Dougl 375 



Si minis 259 



Placodium .Tungcrmanni.T, (Vahl. Tb. Fr.) 351 



sinapispermum, (DC.) Hepp 351 



vitellinum, (Ebrh.) Xa>g. & Hepp 351 



P1ANTAGJ.XEJE 225 



Plantago major, L 225 



Patagoniea, Jacq.,var. gnapbalioides, Gray. 225 



PLATAXEiE 239 



Platamis racemosa, Xutt 239 



Ptalyloma bcUum, T.Moore 322 



brachyptcrum, T. Mooro 322 



Plcctritis congests, DC 138 



I'll in aphis Jamesii, Torr 286 



Plcurogyne, Escbseh 191 



rotata, Griseb 196 



Pluchea campborata, DC 157 



Pneumonanthc, (Necker) Gray 191, 192, 193 



Poa 32 



alpiua, L. 289 



Anilina, Xutt 289 



arctica, R. Br 291 



hrevi/olia, Mnbl 291 



cassia, Sm.? 290 



flexuosa, Mubl 290 



laxa, Hrenke 290 



pratensis, L 290 



serotina, Eseb 290 



tenuifolia, Nutt 290, 294 



TVheeleri, Vasey (PI. XXVLTI) 291 



Poinsettia 248 



POLEMONIACE.E 197,369 



1'olanisia graveolens, Raj 68 



uniglandulosa, DC 68 



Puleiui uiium caruleum, Linn 200 



cceruleum, Linn., var. foliosissimum, 



Gray L00 



confertum, Gray 200 



lmmilc, Willd 200 



r<>!tia<-tidiiim ddphinifulium 153 



Tolygala alba, Nutt 68 



pubcrula, Gray 69 



TOLYGALEJ? 68 



POLYGONACEZE 228,372 



Polygonum ampbibium, L 232 



ampbibium, L., var. Mublcnbergii, Mei.sn 232 



aviculare, L 5,230,373 



Bistorta, L 7,232 



Bistorta, L., var. oblongifoliuni, Meisn. .. 232 



ercctum, L 231 



Hydropiper, L 232 



imbricatum, Xutt 232 



nodosum.Pers 232 



Persicaria, L 233 



tenne, Michx., var. latifolium, Engelm. . 231 



viviparum, L 232 



I'olypodiuvi alpestre, Hoppe 331 



Californicum, Kaulf 303 



carnoswm. Sellogo 304 



