INDEX. 901 
Page Page. 
Poplar—Continued. PP POSS eevee ae ne, wee 823 
Silver-leat...... cscs ceccescncsee oocuce 465 evening _ -. 634, 637, 638 
white family. 661 
yellow Primulaceae... 661 
Poppy family Prinos ambiguus 603 
prickly COUUMCENB S. ae onan naneaeerasemerceces 604 
Populus......... GODOT sioccterewntc stor Sealetchcaeunelee winisisieeaic oe 604 
ADB a eecoeepeees sokiaes, 603 
angulata _..... 604 
carolinensis. .....2....-------- - 465 57 
catalogue -_. , - 464 Carolina .. 603 
deltoides.............--- : 185 OVONSTEON 2-5. ceceseee teak es cdqece 835 
grandidentata ..............-..- - 185 DADAM sees teow ee Seu ccnceesseceteceeame 835 
_ heterophylla._.............-...- 185 Japanese 136 
monilifera .......-..2-.----- 185, 465 mountain _ - 603 
Porellasiccasavesmanieeteaewacdassseeseses 285 southern .. . 57,102 
Catalogue sasssesssssesceee-seeteecoesse 288 SWAMP. .....---.-.--- 667 
involuta 288 | Procumbent Polypremum.. 669 
Poria, catalogue ..-.--..--.-.----.-----+--- 206 | Prosartes 441 
Poronia, catalogue .._....--.-------------- 182 lanuginosa ....--------- seas clades cee 441 
Porothelium, catalogue 213 | Proserpinaca, catalogue 639 
Porotrichum, catalogue 308 DUB TTS xis aiaat sista syoncie Surtees eee teee 639 
Porteranthus, catalogue ..-..-..---------- 539 SD. seses qecseciheesceree eee seendieceeues 193 
stipulaceus .....--.....--- . 75,93 | Prosthemium, catalogue . ° 257 
trifoliatus --.....----- . 7 | Protococcales........----.----------------- 146 
Portulaca, catalogue .-- - 495 | Prunella, catalogue. --.....-.--..---------- 705 
oleracea. ..---.----..-- 55, 152 vulgaris 
Portulacaceae ....-...-.-------- - 495 | Prunus........ 
Post-oak prairies ....-.....------.---- 98 americana. .- Bi, 61, 83, 85, 165, 172, 189, 551, 832 
Potamogeton, catalogue -...- » BF angustifolia ..-...---- 154, 172, 189, 208, 251, 831 
CriSpUS2.<-¥ s2ce seen ee a AT VATE owns cememe ae deeneeresiceeisenct se 240 
diversifolius - . - 126 caroliniana . 171, 834 
Sfluitans -..-. 327 catalogue - - 551 
hybridus 127 cerasus.- - 165 
Ty bv iduss ou cesjsedesisosecdimanceswenccinss 328 CNICHSOi Lei. oc icn3 2 ceAsocauee Seca c Ginn. 551 
lonchites-...........---- 127 RECT Se etre ne Ao Meee ema aie cee Berases 561 
NUTONS aceesastesveceee 327 injucunda. 62 
perfoliatns. s.2-csececoscegssecce.o-05 127,829 MATItIMAsescsecsssentecs se ceunsecee se 551 
PINNATUNY rece cecceceacjasdas: sodeematens 639 serotina .......--.-...-----.--- 61,84, 154, 163, 
pusillus 127 172, 189, 209, 250, 251, 254, 260, 261, 552 
SD D)s scereaccsicmettceces ce eee 49 NVONTONG 2c qacass coceseeeeceseaces 552 
TUPSESCENS .2 22 2 enon wenn ne nnn enn ve eee e BR7 neomontana -.- 62 
tenwissimus ..- 3828 BO c.<anssaro mana wearer meen eiayid 251, 257 
POGOe: vaca axenyyecusne nacecescmciewnnennnes 31 triflera...... 154, 172, 285, 832 
Wil disc cencouaneceugesse eck ostccsaaeces 680 umbellata...-- 99, 122,172 
Potatoes, Irish_....----..-.------------ F Psammophytes - - 129 
sweet .-- F Psammophytes ...-.- . 129 
Potentilla, catalogue -.....---------------- 542 | Psathyrella, catalogue - - 222 
durandii Pseudauliscus, catalogue. ... 143 
simplex .. Pseudohelotium sacchariferum -. 158 
Pottiaceae -- Psilopezia, cata logwe <..2c2vseseewene sexes 155 
Poverty grass Psoralea .cicccescesc-incs Ge tkemeeeees 88 
Prairie belt, root and torage crops- ------ 23 soe ane _ a i 
f R 9: c fs : 
vegetation and soil .......--------- oe = ell ee" 
48 eglandulostt ....----.2-- 202-2222 2 eee 563 
is melilotoides - - 563 
7355 
ne pedunculata - 67 
altissinea -. 756 SIMPLER ace oc deeeeewaenet eee 116 
crepidinea .....------------+-- = he Psyloeybe, catalogue ......---------- ------ 222 
crepidined ....--+-----+- +--+ -- - 15 | ptelea, catalogue -... 587 
deltoidea.. 756 monophylla . 600 
serpentaria ..---4-------+--- 155 SD ie esas cnaitsicitoneasssanceeceteaas pes 194 
barbate ......2-----+- - 755 trifoliata........22--2- 002+ 2222--- 99, 108, 194 
Prickly ash, southern 102,587 | Pteridophyta - w-. «B12 
DEAD se cous Jeebereen meee 133,630 | Pteridophytes - - -- 48,49 
poppy, Mexican.-..-.-.---- 2 20) Pleris GlabOMen sis .....04-~.00- oncom mene nnens 312 
Pride of China.....-....--.---- -----2----+ 583 HOUWUTNA) 0 so nepaieannetnd Resa Sse cecemacisn 123 
