INDEX 
QGleaceae ......... Biessveasivercinc: BOG 
ONGBTA: i seca vcs osennines 146 
Onagraceae ......... ee eee ee 144 
Onion, wild ....... ae eoktiees 10 
Onosmodium ............... 103 
OPUIAStER seicins sa ssisiececs eyeirive sare 127 
PUNE ssevescacnwesnages ee 149 
Orchidaceae ............606. 49 
OTGHIGALES ise sieeve s ween en 49 
OT CHAS: ” ve. 5 scare haa denne sc ersce ees 50 
Oreocarya, s4caicctaviwenesss 102 
Crobanchaceae ....... Wich sard 115 
Orobanche ...........ee eee 115 
OrOphaca visi ewes eewgres oe 134 
Orthocarpus ................ 114 
CQUYGCRE: occe ee Phew reese ves 47 
OLY ZODSTS i siss ce wtdenels ce cenetenica eee 45 
Osmorrhiza ........-....005 160 
OSUVA ccxneans wexes sacdean roy 157 
Oxalidaceae ...........e008- 81 
ORATIS. 5 ensue .nce ancunansinecdeyautcsceres Ln 
Oxybaphus ................. 0 
Oyster plant v.cses sancue cies 194 
Pachylophus <s«s.csaawaseus 147 
PAA i ccsscsustsss oeganiie lard alsemsacetwiiens 158 
PANiGBe? iesecaecensie cad meee ae 39 
Panicularia, 2.0 0e.2ee8nec ees “80 
FPanigunl sass vevves sue pue noe 39 
Papaveraceae .......5..-.65 57 
Papaverales .........00.000- 57 
Papilionaceae .............. 129 
Parietaria ..... Micaiciianaeasbrtate. 308 92 
Paronyehia. o-s..xiccscecanavew 67 
BATOSCIA, <cliiss tiecnteuate-snatiunirso ae 138 
Parsnip, wild ............... 162 
Parthenocissus ............. 153 
Paspalum 4.60 casas newaese ae 41 
PASUMAGH. issu ice tae etates 162 
Pawpaw, American ......... 57 
P@Ctis: ...saaosed- came ee meaeses 188 
Pedicularis .........0eee eee 115 
BOL TORY sx cccorscs ceasovnie: ove seaniecen fe 92 
Pennyroyal ...........0e.0ee 121 
Penthorum., 49.04 ssw ss canoe « 142 
Pentstemon .............4.. 112 
Peppermint .............00- 122 
Petalostemon ............... 139 
Phae: eys-scsene serine sewtow xx 134 
Phaceliay exscovsacc costed s 100 
Phalarideae ............005- 38 
Phalaris ....... waar Selden 38 
Phellopteris ...........000-- 162 
Philotria, .csscsicswecescaews. 48 
Phleum ........ onal auesaeeetivevee’ “AA: 
RBI OX: (ins dealaveinic dyanemaice anlinnnaiees 
Phragmites 
Phryma 
Phrymaceae 
Physalis 
Physaria 
Physostegia 
Phytolacca 
Phytolaccaceae 
PiCTAGONIa 5.545 srace s ease teens sense 
Picradeniopsis 
Pine 
Pinus 
PIT OIA: *.stnguee eundimdlodulage see 
Pirolaceae ...........0 cee ee 
Plantaginaceae 
Plantago 
PlaMtaim, cia. osscswen eons a 
Plantain, Indian 
Platanaceae 
PIAtANWS! co iace se wea aaadens 
Plum, wild 
POAS ‘ais guangmammaued +s atta to 
Foaceae 
POA SS)» ecaciveies te aceiesaverodivanscabare si aes 
Podophyllum 
Polanisia: cscs ucsressasuss 
Polemoniaceae 
Polemoniales 
POLY FAN. ose kexciw eeaenaaes 
Polygalaceae 
Polygonaceae 
Polygonatum 
Polygonum 
Polypogon 
Folypteris 
Polytaenia ............0000. 
Fontederiaceae 
Populus 
Portulaca .......... cc ce eee 
Portulacaceae 
Fotamogeton ...........0... 
Potamogetonaceae 
Potentilla ..............0005 
Prickly-pear 
Frimulaceae 
Primulales 
Prunella 
Prunus 
Psoralea 
PtClea, cssicsak sedio ade eeanmws-ov 
Pterospora 
Ptiloria 
