INDEX. 789 
Page. Page. 
Polemonium............ eee cece eeeee §21-522,535 | Ptilocalyx........ 0.0.2... e ee ee cece eececeres 536 
Poliomintha..........-----e20eeee cece eee eeee 556 | Ptiloria............ 02. cee e eens eens ee eeeeeee 620-621 
Polygala... 2.22... 0 eee eee e eee eee eee eee 391-392 | Puccinellia............2.2 22.22 ee eee eee eee 104 
Polygalaceae........22-.-e. 0 cece eee e eee 390-392 | Puccoon................eeeeeeeeees we eeeeeeee 542 
Polygalales.........2...-----eeeeeeeeeee eee 390-392 | Pulque.................0006- ec eenscceecccene 145 
Polygonacea@. .... 2... -2 eee eee ee ee eee 181-197 | Pulsatilla..............0......00 weewececcnes 255 
Polygonales..........--0--seeeeeeeeeeeeees 181-197 | Purple hair grass..............eeeeeeeeeeees- 69 
Polygonella............-.-.eeeee cece e ences *193 needle TASS .. 2.2... cece cece eee ceeeceeee 64 
Polygonum...........----....-06. 193-195, 196,197 | Purshia... 2.2.2.2... ccc ce eceenccccccccccenss 318 
Polypappus......---..--002-cceeeeeeeeee eee 693 | Purslane..........2......eeeeeee we nenceeceee 230 
Polypodiaceae .......... wen e teen eect en enee 18-27 COMMON ..... 2-22. e eee ence cece eee e eee 230 
Polypodium............ 2.2... cceeeeeenes 25, 26,27 family... 2.2.2.2... eee ee eee eee ence 229-234 
Polypody.....--- 222-22 cece cece eee eee een eee 27 SOD. eee cece cece ee cece eee ee eee eneeeees 229 
Polypogon.............0- eee e cece eee eneee 70, 77-78 speedwell.............2---2.0--- eee eee eee 589 
Polyptevis ... 2... .00cccceeseecenceeeeeceeeee 722 | Pyrola....... 2.2... eee eee eee eee eee ee eee 487-488 
POMATIA... 2.2. eee eee ee ee eee eees 333 | Pyrolaceae............... cee e eee ee ee ee eee 486-488 
Pondweed.......-.--------22 202 eee cece eeeees 40 | Pyrrhopappus...........2..00.ee eee eee eee ee 624 
family ......0..02202 ee cece eee ee eee eens 39-41 | Pyrrocoma................ 2. eee eee eee eens 667 
horned... 0.2.2... eee eee eee ee eens 40 | Quaking aspen..............0... eee eee eee ee 155 
Poflil. 2... 002. - eee ee eee eee ee eee ees 318 | Quamoclidion ............ceceeeeeecceeeeeeus 222 
Pontederia............ 0020-22 eee eee cence eee 126 | Quamoclit.... 2.2... ccc cece wee eee en ee eees 517 
Pontederiaceae.........-....------0--e--eee 126 | Quassia family ............... 20 -e eee ee ee eee 390 
Popotillo.........--..0-.22 2022s ee eee ee eee 38 | Queen’s delight................2-2.-22--02--- 404 
D0) 0) 0) 262 | Quelite salado..........2....22.22 22 eee ee eee 200 
California... 2.2.2... eee eee ee eee eee eeee 262 | QUEFCUS.... 22... e eee eee eee eee eee cece 164-174 
COMMON... 22.222 eee ee eee cee ee eee 262 | Quincula........ 2. eee eee eee 569 
family ........------002- 22 eee eee eee eee 260-262 | Rabbit brush............ a ence wee e cee cee eens 660 
prickly ......2.... 02-0 eee e eee e eee eee e eens 261 | Radicula.................. wee cece nee eeeeee 283-285 
Populus......2.-- 2.20202. s cece cece eee eeeee 155-156 | Radish.................. wee cererccccsccerees 280 
Porcupine grass. .....---------2.2. cece eee eee 65 | Rafinesquia..... 2.2... ccceeeeeeceeeceneeeeces 621 
Porophyllum.........---.-----------eee eee 714 | Ragweed ...........ceeccceececwcccececsees 635, 636 
Portulaca... 22.2.0... eee eee ee eee ee eee 230, 232 family... .. 2... ccc cece eee eceneenncences 631-636 
Portulacaceae..........2....00- cece eee eee 229-934 | Raimannia...............-0-.- eee e eee eee eee 470 
Potamogeton.........---..-----2-ee ee eee eee 40 | Rainbow cactus................-2.22..2-008- 456 
Potamogetonaceae........--.--------------- 39-41 | Ranales.........--2-.2. 2-22 e eee eee ee eee 243-260 
Potato, wild..........------2--2-20--ee eee 573 | Ranunculaceae............eeeeeseeeeeeeeee 243-258 
Potentilla............2..--2-02---- 310-314, 315,316 | Ranunculus...............0..0. cece eee eeee 251-253 
Prairie clover..............202ee eee eeeeeeeee 355 | Raphanus.......-........--....----- 20 eee ee 280 
Prenanthella........2-.... 22 cece eee eee eens 629 | Raspberry...........-.--ceeseneceeeeeeeees 319, 320 
Prenanthes..........--20-eeeeeee reece eens 621,628 black... . 2.2.2 esse e eee ee eee eeeeeeecceces 320 
Prickly lettuce. .........-2--0...eeee eee e eee 622 | Ratibida.. 2.2.2.2... cece eeeeceeeeeencees 705-706 
50) 437 | Rattle, yellow.........eceecseecees eeeeececes 595 
5X0) 9) 0) nes 261 | Rattlebox...............0008 we ee cee eececeeees 339 
Primrose. .... 22... eee ecw een eee ew eeeeoes 492 | Rattlesnake plantain ...................2..-. 150 
family... 2.2202... 2 eee eee eee eee eee 490-495 | Rayless goldenrod...............-.....225-- 665 
Primula............2.0022. 02 ce cece e eee eeee 492-493 | Razoumofskya.................4. eeeeeeeee 178-179 
Primulaceae......--------------- 2-2 ee eee 490-495 | Red clover.............-.eeeceeenee seeeeeeee 345 
Primulales...... ace c ee cas ee cesercecececte 490-495 | Red columbine...............ceeeeeceeeeeees 248 
Proboscidea..........---.-. ee eee eee ence eee 601-602 raspberry........... eeeeceee eee ensccccens 320 
PYHOSATLES . 2 oe eee eee eee eee eee eens 140 | Redtop......-- 2... cece ccc eee e ewww eee enee 79 
Prosopis... 2... .....0. eee cece eee eee ee ee eens 330 | Reed bentgrass.....-..--------02----e eee eee 79 
Prunella... 2.2... ee cee eee eee cee eee eee eee 565 CANary QTASS......------ eee e eee eeee eee 61 
Prunus... 2.2222... cece e eee ee eee 326,327 Biant...-..--- eee eee eee eee eee eee eee 89 
Psathyrotes........2.02-2eeeee cece eee eeeeeee 748 | Relbunium.............--e0seseeeeeeeceeeeee 605 
PSCMETO. 2. oo e eee cee cece eee cee eee eenee 416 | Resedaceae ..........-.-2 eee cece cece ee eneee 291 
Pseudocymopterus........--2.-26.eeseeees 482-483 | Resedelld... 2... 2.0. ccc ence cence cee enwnecee 291 
Pseudotsuga..... 2.22... e eee eee cece cece eee 35 | Resin of yellow pine, use by Indians......... 32 
Psilactis. 2.2.2.0... cece eee eee cece eee e ee ees 690 | Resurrection plant....................-2.5-- 29 
Psilostrophe........--.----0-- 22 eee ee eee ee 718 | Reverchonia.... 2.2.0.2... cee esc e cece ene e eens 401 
Psoralea.........-222ee-ee cece eeee 348-349, 352,354 | Rhammaceae...........2...seeeeeeceeeeeee 413-415 
Ptelea....... 2-22-22 ee eee eee eee eee eee 388-389 | Rhammales...............eeeeceeeeeenenee 412-416 
Pteridium..........-.-.2------- 02 eee eee ee eee 21 | Rhammnus......-.-.-.-0-e cence ee eeeeeene 414-415 
Pteridophyta.....-..--.-. ee cee ewer eeeeeeeeee 18-30 | Rhimanthus........-.-cceseeccccceecerercces 595 
Dd) 24 | Rhodiola.............eeeeeeeeeeeceees weeeee 293- 
Pterospora,......ecee cece eee cceceeeceeceeees 486 | Rhoeidium................eeceeeeeeeeeeeeeee 408 
Pteryxia.......ceeeeeeeeeceeeceeee wceceeee -- 485 | Rhombolytrum............ccceeceees secceesee 91 
