INDEX. 



419 



PAGE 



Narthedum glvMnusum, Mx 44 



pusiUum., Mx 43 



Nasturtium 300 



obtusum, Nutt 301 



palustre, DC. var 300 



Neillia opulifolia, Benth. & Hook. 318 



Nemophila 343 



Menziesii,Hooli. & Arn 343 



Neoiiia cemua, Pursh 8 



pubescens, Pursh 9 



rfpena, Pursh 9 



Nephrodium aerosttchoides, Michx. . 277 



asplenoides, Michx 267 



bulhiferum, Michx 280 



crislatum, Michx 273 



liryopleris, Michx 270 



Fikx-faemina, Michx 267 



Filix-mas, Rich 274 



fragrans, Rich 276 



Goldieanum, Hoolv. & Grev. . • 273 



marginale, Michx 274 



punctilobiUum, Michx 285 



rufidvlum, Miclix 283 



rigidum, Desv. 274 



spinvlomm, Desv 275 



tenue, Michx 279 



Thelypteris, Desv 272 



Thelypteroules, Michx 271 



Nuphar 300 



advena, Ait., var. minor, 



Morong 300 



luteum. Smith, var. (?) 300 



Nymphsea 800 



odorata, var. minor, Sims 300 



pygmxa, Ait 300 



reniformis, DC 300 



tetragona, Georgi 300 



iubtrosa, Paine 300 



Oakesia, Watson 365 



sessilifblia, "Wat 45, 365 



CEnanthe 327 



sarmentosa, Presl 327 



Omphalodes, Tourn 344 



nana, Gray 344 



Onobrychis....' 317 



sativa. Lam 317 



Onoclea, Linn 281 



nodiUom, Schk 281 



sensibilis, Linn 281 



Struthiopteris, Hoflf. 281 



OphioglossacejE (cxx.) 253 



Ophioglossum, Linn 253 



vnlgatum, Linn 253 



Ophrys cemua, Mx 8 



corallorliiza, Mx 5 



cordala, Mx 6 



OpUsmenus Crus-galli, Kuntli 177 



muricatus, Kuntli 177 



OECHIDACBiE (OIII.) 2 



Orchis, Linn 12 



PAGE 



aristata, Fiscli 12 



blephariglottis, Pursli 19 



bracteata, Pursh 14 



ciliaris, Pursh 18 



clavellata, Mx 13 



dilalaia, Pursh 15 



fimbriaia, Pursh 19 



fuscescens, Pursli 13 



humilis, Mx 12 



hyperborea, Pursh 14 



incisa,, Pursh 19 



lacera, Mx 19 



latifolia, Linn 12 



Itixophsea, Nutt 19 



oblitsata, Pursh 16 



orbiculata, Pursh 18 



psycodes, Parsh 19 



rotundifolia> Gray 12 



spectabilis, Linn 12 



Iridenlata, Pursh 13 



Orthocarpus 348 



castilleioides, Benth 348 



tenuifolius 348 



Oryzopsis, Michx 192, 390 



asperifoha, Mx 192 



anperifnlia, Kunth 193 



Canadensis, Torr 1 92 



cuspidata, Benth 193, 390 



melanocarpa, Muhl 193 



parviflora, Nutt 192 



Osmorrhiza 327 



■ occidenlalis, Torr 327 



Osmunda, Linn 286 



cinnamomea, Linn 286 



Claytoniana, Linn 286 



mtcrrapto, Michx 286 



regalis, Linn 286 



sax. spectabilis, Milde 286 



spectaMis, Willd 286 



Oxy coccus 338 



vulgaris, var. intermedium 



Gray 338 



Panicum, Linn 176, 389 



agrostoides, Spreng 176 



capillare, Linn 177 



clandesiinum. Hook 179 



Criis-galli, Linn 177 



var. hispidum. Ell 177 



depauperatum, Muhl 177 



dichotomum, Linn 178 



var. nitidum, Lam 178 



var. pubescens. Gray.... 178 



var. sphxrocarpon. Gray.. 179 



elongatum, Pursh 176 



glabrum, i ■ and 178 



glaiuMm, Linn ] 80 



imiolulum, Tail 177 



lalifolium, Linn 179 



laxiflorum, Lam. 179 



