583 
Page. Page. 
Pinesap .......-.-.---2 22-022 cence eens 254 | Post-oak grape..... Ser ccnecceeecrsccnsee 62 
Pink family.....--......2.220.-2.202-- eee 28 | Potamogeton......--.-...22-. 200.2200 e- . 456 
Pinkroot ........-.---22..022.-eeee nee eee 271 | Potentilla............0.0.. 002222 eee . 106 
Pifion .. 2.2.22. e eee eee eee eee ene 554 | Poverty grass .........--22.-22222.22e0ees 513 
PINUS «22... eee eee eee ee eee eee e eee eceee 553 | Prairie clover........-.....22..22222200e- 79 
PIPERACESS ..-..222ee eee eee e een n ee enee oe 382 RIASS... ee eee eee eee 519 
Pipewort....- 2222-222 cee eee eee eens 458 TOSO .- 2-2 eee ee ee eee eee eee 106 
Pipewort family .......-..2....2-.00-- eee 458 | Prickly ash .......2....002002..02 22222000. 53, 54 
Pistacia.... 2.22... .0.22.ee cece ew ee ewes 67 POPPY -...--.---2--- eee eee ee eeeee 12 
Pithecolobium .....................2. eeee 101 | Pride of India......--...-2..22222220.222. 55 
Planera ..... 2... --.20. cece ee eee eee en ene 407 | Primrose family .-..............0222---2-. 255 
Plane-tree family .....-....-..--..20.200. 409 | PRIMULACEAD ...... 2.2.20. 002. eee eee ee 255 
Planer tree... . 2.2... eee eee eee eee eee 407 | Prince’s feather. .............2-.2.22..2.. 377 
PLANTAGINEAS. 2.0.26 eee cece ee cece eee e eee 344 | Proserpinaca.....-----.2.0...222.2 222. ee lil 
Plantago...... 20.00.22 2c eee ee ee ee eee e eee 344 | Prosopis ..........2.20.2200. 0020-20 95 
Plantain ......... 22-22-0222 222. ee een. 242,344,454 | Prunus ............... vee eee eee ee eee eee 102 
Plantain family..............0+2.2-2--20- 344 | Psathyrotes....2......2.2.0.0 002.2 eee eee 240 
Plantain-leaved everlasting .............. 202.) Pseudotsuga......2...2. 22.22 e eee ee eee 555 
PLATANACES 2.2.00... 202. e ee eens eee e eee 409 Psilactis ..... 2.0.2.0 0 22. eee cee 193 
Platanus ...-.. 22... eee eee eee eee eee eee 409 | Psilocarpa .........2- 2222 e ee cee eee 474 
Plewraphis .....-..0e.ececceeeeeeeceeeeeee 498 | Psoralea.......... 2.022 eee ee ceee eee ee eee 75 
Pleurisy root .-...-... 22.22.02 ee ee eee eee 265 | Ptelea ......0..02222 20222 e lee cece eee eee 54 
Pluchea .... 22-2... 0. 22222 cece eee eee ee 201 | Pteris... 2.2.2. eee eee eee eee ee eee ee 563 
Plum ..-......222-- 22-2 eee eee eee eee eee 102 | Pterocaulon.........2.....2..2--.2 cece ees 201 
PLUMBAGINER ......--2- 022-2 c eens enee 254 | Puccoon .....-....-2222222220ee ec ee ee eee 287 
POA .. 2.02. eee eee eee cee eee 546 | Pulse family ............22..22.00-02-e eee 68 
Pod........2-6-.-+.+----- 539, 540, 541, 542, 543, 547 Pungent meadow grass ............--.00- 543 
POdOBHMUM |... 2-2 ee ee ee eee eee 524 | Purple cone-flower.............2..2..20-- 214 
PODOSTEMACEH...-.- 2.202000. 02eeee eee 381 | Purplish cudweed .................-2222- 203 
Podostemon.............-.2-2..-.2.------ 381 | Purslane.......2....2..---22-2-ee ee eee eee 31,113 
Poison ivy ..-..-..----------------- 200s 68 | Purslane family............0..00eeeeceeee 31 
OF) ne 68 speedwell .........--..--------- 312 
Poke...-.-..--- 22-22-0222 ee eee ee ee eee eee 372 | Pyenanthemum....-.......--.-2.2-..00-- 334 
Pokeweed.......--------- 2+ --seeeeeee eee 87L | Pyrrhopappus .....-........--22.00eeeeee 249 
Pokeweed family .-.....--..---.-. seeeeee BTL | Pyrus.....22.02 eee cece eee eee cece ceceeee 106 
Polanisia........-0...... 0000-22 eee ee eee 23 
POLEMONIACE® ..-..-----.2---- 022. eeeee 276 Quamoclidion .... 202. .ce ec ceeeee eee eneeee 351 
Polemonium family .-.....----22....2..24 276 | Quamoclit..............-22-- bee cece eee nee 289 
Poliomintha.....-..........2..0-2-2-eeeee 335 | Quassia family.......-2....2.2..2-0-220-- 55 
Polygala ........--..---- 22.22 e eee e eee eee 26 | Quercitron...- 2.2.0.0... 2... e eee eee 416 
POLYGALE ..... 2-22.22 eee eee eee eee -. 26 Quercus ....-. 2.2... eee eee eee ee eee ee 414 
POLYGONACER «22-22-0020 0002. e eee eee eee 372 | Quillworts.........0--..220e ee eee cece eee 568 
Polygonatum ...-.......2..2..---220-000. 438 
. Polygonum ....-.--.-. 2-2-2. e.ce cesses eee B75 | Radish. ....0-..-2+eeeeee eee ee eee ee eee ee ee 22 
Polymnia .....--..-----222--202--s ence ees 204 Ragweed....-.---.22--2... weet eee ee ee eeee 209 
Polypodium............2.2.222.2--02..222- 562 Ramuneulus......2.22-2020e222eeeee cece 8 
Polypogon .....--.---+.+22---00ee seen ee ee 517 RANUNCULACE ....-....2-- steteronecees 6 
Polypremum.....-... woe cece ese cenenenens 272 | Raphanus. .....-....2.2---2 02202 eee ee ee 22 
Polypteris ..........-.222-222.2---.22.-.- 230 | Raspberry -----------...022.-.22- eee eee ee 104 
Polytenia......-...--.-- 2222-2222. eee ee 141 | Rattlebox..........2-2. 0.002 ce eee eee ee 72 
Pomme blanche ......-..-.----.-++-+-20-- 75 | Rayless golden-rod...............2--2-.0.. 187 
Pomme de prairie ...-.-...---.-+.. 222200. 75 | Razoumofskya.......---.-22.---..-..000. 384 
Pond lily......... 2222-22-22. ee- eee eee eee 12 | Red bay .......--2.0-.000 ceeceeeeccenece 383 
Pondweed.........-.----2-2-2+2---2ee eee 456 birch.... 2.2.2.2 eee eee eee eee eee ee eee 413 
Pondweed fa Mily ..2---.222ee eee eee eee 456 bud 2.2... ee ee eee eee eee ones 91 
Pontederia ............... wes eee e ee eeenee 441 Cedar... 2.222... eee ee ee eee eee ee eee 556 
PONTEDERIACEE ....-.2.2-2222-.2--20000- 441 OlM .. 2. eee eee eee cee e ese e eens 406 
Poplar ...............---- 22-22-22 eee 419 fir.......... eeccnccees oe eee ee eee eee 555 
Poppy family ...-......--..-----22-++se0e 12 mulberry.....-......- oeeeeeeeeeeenee 408 
Populus.........-..---...-222-22..205 sone 419 ae 410 
Porliera........0.2.-.0eceee eee eee eee eeuee 50 PIUM 2... cence ween eee cee e eee eee 102 
Porophyllum ...........222 222222 eeeseeee 235 TOOt .....2.-..-2-. 2-22 eee eee eee eee 60 
Portulacea ....... oe cece ee encn ence sseseae- 31 | Rein-orchis ............2-..2.0..22.-0---- 425 
PORTULACES ......2...02-----.2220e ese eee 31 | Rescue-grass. ........02..ceee cence ee eee 548 
Post oak .......... we taresccccccceeerenare 414 | RESEDACEAL.........-ccccececeeece eeceeee 23 
