822 



INDEX. 



TAGE. 



Oak, Scarlet 405 



Scrub, 407 



Scrub Chestnut, 410 



Spanish, 406 



Swamp Post, 409 



Swamp White 409 



White 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, 557 



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, 76S 



Oxycoccus 627 



Oxygraphis 457 



Oxypolis, 600 



Painted Cup 6S7 



Panax, 590 



Panicum, 189 



Panicum aciculare, 199 



aculeatum, 210 



addisoni, 205 



agrostoides 196 



amarum, 196 



anceps 1 98 



angustif(>liuin, 199 



ashei, 208 



barbulatum 200 



boscii, 211 



caerulescens 200 



capillare 195 



clandestinum 21 t 



clutei 1 01 



PAGE. 



Panicum columbianum, 206 



conimonsianuni 205 



coramutatum, 208 



condensum, 197 



cubense, 196 



cryptanthum 210 



depauperatuni, 198 



dichotomum, 199 



dichotomiflorum 195 



ensifolium, 207 



hemitomon 194 



liuachucs, 203 



lanuginosum 204 



latifolium, 2U 



leucothrix, 202 



lindheimeri, 202 



linearifolium, 198 



lucidum, 200 



mattamuskeetense, 201 



meridionale 203 



microcarpon, 200 



oligosanthes, 209 



oricola 204 



philadelphicum 195 



polyanthes, 208 



pseudopubescens 205 



scabriusculum, 210 



scoparium, 209 



scribnerianum 209' 



spliasrocarpon 207 



spretum, 202 



stipitatum 197 



tennesseensc 203, 



thinium, 207 



tsugetorum. . . 206 



vcrrucosum, 194 



villosissimum 204 



virgatum, 196 



wrightianum 201 



Panicularia 240 



Pansy, Field 572 



Papaver 460 



Papaw, 448 



Parietaria 416 



Parker, C. F 324 



Parnassia, 470 



Parsnip 591 



Cow, 601 



Meadow, 595. 



Purple Meadow 599 



Water 597 



Parsonsia 576- 



Partridge Berry 703 



Paspalum 185 



Pea, Beach 510 



Butterfly. 511 



Milk, 512 



Spurred Butterfly 510 



Peanut, Wild 511 



Peach, 490. 



