ii22 



INDEX. 



PACE. 



Uak, Scarlet, 40S 



Scrub, 407 



Scrub Chestnut 410 



Spanisli 406 



Swamp Post, 409 



Swamp W'liitc 409 



Wliitc, 408 



Willow 408 



Oat Grass, 231 



Obolaria 643 



Oenothera, 583 



Oldenlandia 702 



Onoclea, 137 



Onosmodium, 659 



Ophioglossuni 122 



Opulaster 477 



Opuntia, 573 



Orache, Halberd-leaved 429 



Sea Beach 430 



Orange Grass, 357 



Orchis, Crane-fly, 378 



Orchis, Crested Yellow 367 



Fringeless Purple, 369 



Green Fringed 369 



Green Wood 365 



Large Purple Fringed, 369 



Pale-green 364 



Ragged, 369 



Showy, 364 



Small Purple Fringed, 369 



Snowy, 366 



Southern Yellow, 365 



White Fringed 368 



Yellow Fringed 367 



Orontium 317 



Osmunda, 124 



Ostrya 400 



Oxalis, 516 



Ox-eye, 768 



Oxycoccus 627 



Oxygraphis 457 



Oxypolis, 600 



Painted Cup 687 



Panax, 590 



Panicum, 189 



Panicum aciculare, 199 



aculeatum, 210 



addisoni, 205 



agrostoides 196 



amarum, 196 



anceps 198 



angustifolium, 199 



ashei 208 



barbulatum 200 



boscii, 211 



caerulescens, 200 



capillare, 195 



clandestinum 211 



clntei 191 



PACE. 



r.inicuni cohinibianuni. 206 



commonsianum, 205 



commutatum, 208 



condcnsum 197 



cubense 196 



cryptanthum 210 



(iepauperatuni 198 



(lichotomum, 199 



dichotomifloruni 195 



cnsifolium, 207 



licmitomon, 194 



liuachucje 203 



lanuginosum 204 



latifolium, 211 



leucothrix, 202 



lindheimeri 202 



lincarifolium, 198 



lucidum 200 



mattamuskeetense, 201 



meridionale 203 



microcarpon 200 



oligosanthes, 209 



oricola, 204 



philadelphicuni 195 



polyanthes, 208 



pseudopubescens 205 



scabriusculum, 210 



scoparium, •. 209 



scribnerianum 209 



spHaerocarpon 207 



spretum, 202 



stipitatum 197 



tennesseense 203 



thinium 207 



tsugetorum, 206 



verrucosum, 194 



villosissimuni 204 



\ irgatura 196 



wriglitianiiiu 201 



I'anicularia 240 



Pansy, Field 572 



I'apaver, 460 



Papaw 44& 



Parietaria, 416 



Parker, C. F 324 



Parnassia, 470 



Parsnip, 591 



Cow, 601 



Meadow, 595 



Purple Meadow 599 



\\'atcr 597 



Parsonsia, 576 



Partridge lierry, 703 



Paspalum 185 



Pea, Beach, 510 



Butterfly, 511 



Milk 512 



Spurred ISutterrty 510 



Pea-nut, Wild, 511 



Peach, 490 



