INDEX. 



803 



Oryza clandestina A. BR 54 



Oryzopsis Miciix 57 



Oryzopsis asperi folia KUNTH . 58 



Oryzopsis asperifulia MICHX. 58 



Oryzopsis canadensis TORR. 58 



Oryzopsis juncea (MiCHX.). .. 58 



Oryzopsis melanocarpa MUHL 58 



Oryzopsis parvifiora HOOK. . 58 



Osmia Sen -BiP 501 



Osmodium RAF 436 



Osruorhiza RAF 398 



brevistylis DC 398 



claytoni BSP 398 



cordataRAF.. 398 



dulcis RAF 398 



longistylis DO 398 



villosaRAF 398 



Ostericum HOFF 391 



Ostrya SCOP 186 



ostrya (LiNN.) 187 



Ostrya virginiana KOCH 187 



Ostrya virginica WILLD 187 



Otachyrium NEES 49 



Otaria HBK 423 



Otophylla BENTH 468 



michauxii BENTH 468 



Ototropis NEES 319 



Oxalidaceae 334 



Oxalideae ( Trib.) B. and H . . . . 333 



Oxalis LINN 334 



Oxalis corniculata var. stricta 



SAV 334 



dillenii JACQ 334 



florida SALISB 334 



Oxalis longiflora LINN 335 



Oxalis lyoni PURSH 334 



Oxalis stricta LINN 334 



Oxalis vespertilionis GRAY. . . 335 



violacea LINN 335 



Oxyacantha Rupp 287 



Oxybaphus L'HER 216 



angustifolius SWEET.. . . 216 



hirsutus SWEET 217 



nyctagineus SWEET 217 



Oxybasis KAR. and KIR 211 



Oxycaryum NEES 96 



Oxycoccus LUDW 408 



Oxycoccus hispidulus PERS ... 407 



Oxycoccus macrocarpus (A IT.) . . 409 



oxycoccus (LiNN.) 409 



Oxycoccus palustris PERS 409 



vulgaris PURSH 409 



Oxydium BENN 319 



Oxygraphis BUNGE 241 



cymbalaria (PURSH) 241 



Oxylepis BENTH 547 



Oxypogon RAF 315 



Oxypolis RAF 391 



denticulata RAF 391 



rigidaRAF 391 



tricuspidata RAF 391 



Oxyramphis WALL 317 



Oxys TOURN 334 



Oxytropis DC 322 



Oxytropis hookeriana NUTT.. 323 



lamberti PURSH 323 



splendens DOUG 322 



Ozoroa DEL 345 



Pachiloma nuttallii RAF 389 



Pachycarpus E. MEY 423 



Pachyloma SPACH 241 



Pachylophus SPACH 380 



Pachypodium NUTT 256 



Pachypodium WEBB 257 



Pad us cartilaginea ROEM 306 



densiflora ROEM 307 



flmbriata ROEM 307 



hirsuta ROEM 307 



micrantha ROEM 307 



oblonga MOENCH 307 



obovata ROEM 307 



rubra MILL 307 



serotina AGH 306 



virginiana ROEM 306 



Palavia CAV_ 216 



Paleya CASS 567 



Palimbia BESS 390 



Paliurus ADANS 355 



Palladia MOENCH 412 



Pallavici nia DE NOT 458 



Pallinia scoparia SPRENG 48 



Palmerella GRAY 497 



Paltoria R. and P 349 



Panax americanum RAF 386 



lanceolatum RAF 385 



quinquefolium LINN 386 



trifolium LINN 385 



Panicularia FABR 80 



americana (ToRR. ) 81 



Panicularia aquatica OK 81 



Panicularia canadensis ( MICHX.) 82 



elongata (TORR.) 82 



fluitans (LiNN.) 80 



nervata ( WILLD. ) 81 



Panicum LINN 48 



agrostoides MUHL 51 



Panicum autumnale Bosc 52 



barbulatum MICHX 50 



Panicum capillare LINN 52 



Panicum clandestinum HOOK. 51 

 Panicum crus-galli var. hispidum 



(MUHL.) 49 



depauperatum MUHL 50 



Panicum dichotomiflorum 



Micnx 52 



Panicum dichotomum LINN .... 50 



dichotomum var. pubescens 



(LAM,)., 50 



Panicum divergens MUHL 52 



elongatum PURSH 51 



fragile KUNTH 52 



hispidum MUHL 49 



involutumToRR 50 



Panicum latifolium LINN 51 



Panicum laxiflorum LAM 50 



microcarpon MUHL 50 



