INDEX. 



557 



Page. 



Ophrys monophyllos . . ii. 268 



Oflismenus ii. 424 



Crus-galli 424 



muricatus 424 



Optjntia i. 245 



vulgaris 245 



Orach ii. 137 



Orange-root i. 26 



Orchard Grass ii. 466 



ORCHIDACEiE... ii. 266 

 Orchidocarpum arielinum,i.30 



Orchis ii. 272 



bidentata 275 



blepharigloUis. 277 



bracteala 275 



ciliaris 277 



clavellata 273 



Jimbriata 278 



fissa 278 



fiava 275 



fuscescens 275 



herbiola 275 



humilis 273 



Huronensis 276 



hyperborea 276 



lacera 278 



oblusata 274 



orbiculata 274 



physodes 278 



psy codes 278 



spectabilis 272 



tridentata 273 



virescens 275 



Orchis Tribe _. ii. 266 



ORieANUM ii. 64 



incanum . 61 



vulgare 64 



Ornithooalum ii. 307 



umbeliatum 307 



OROBANCHACE.E,ii. 22 



Orobanche ii. 22 



Americana 22 



biflnra.. 23 



uniflora 23 



Virginiana 24 



[Flora — Vol. 2.] 



Page. 



Orontium ii. 243 



aquaticum 243 



Orpine... i. 252 



Oryzopsis ii. 431 



asperifolia 432 



Canadensis 433 



melanocarpa . . 432 



parviflora 433 



Osier ii. 204 



OsMORHIZA i. 281 



brevistylis 282 



longistylis 281 



OsMUNDA ii. 503 



cinnamomea . . 503 



Claytoniana . . 503 



interrupta 503 



regalis 504 



spectabilis 504 



Struthiopleris - 486 



Virginica 506 



Ostrich Fern ii. 486 



OsTRYA ii. 184 



Virginica 185 



vulgaris 185 



Oswego Tea ii. 58 



OXALIDACE^ ... i. 122 



OxALis i. 122 



Acetosella 122 



Americanum . . 122 



Dillenii 123 



recurva 123 



stricta 123 



violacea 123 



Oxeye i. 378 



Oxeye Daisy i. 392 



Oxycoccus i, 447 



hispidulus 450 



mitcrocarpus . . 447 



paluslris 447 



vulgaris 447 



Oxytripolium i. 349 



Pjederota ii. 44 



Virginica 44 



Painted-cup ii, 48 



Panic-grass ii. 423 



74 



Page. 



Panax i. 286 



quinquefolium . 286 



trifolium . 287 



Panicum ii. 423 



agroslidiforme, 429 



agrostoides 429 



barbulalum 428 



capillare 426 



clandestinum . . 426 



Crus-galli 424 



debile 428 



depauperatum . 427 

 dichotomiflorum, 429 



dichotomum 427 



elongalum 429 



filiforme 424 



geniculatum . . 429 



glabrum 423 



glaucum 430 



hispidum 424 



involulum 427 



latifolium 425 



microcarpon . . 428 



miliaceum 429 



muriatum 424 



nitidwm 427 



pedunculatum . 426 



proliferum 429 



ramulosum 428 



rectum 427 



sanguinale 423 



slrigosum 427 



verrucosum 428 



virgatum 425 



viride 430 



Walieri 424, 425 



xanthophysum. 426 



PAPAVERACEjE . i. 43 



Papaw i. 30 



Pappoose-root i. 33 



Parietaria ii. 224 



Americana 224 



Pennsylvanica . 224 



Parnassia i, 83 



Americana 83 



