174 



INDEX. 



Page. 



Mertensia Continued. 



paniculata, Don 101 



Sibirica, Don 101 



Mimulus 



floribundus, Dougl 94 



Jamesii, Torr 94 



luteus, L 94 



rubellus, Gray 94 



Mirabilis,L 115 



multiflora, Gray 115 



oxybaphoides, Gray 115 



Mite'lla 



pentandra, Hook 40 



Mnium 



cuspidatum, Hedw 159 



punctatum, L 159 



serratum, Schrad 159 



spinosum, Voit 159 



spinulosnm, Br. Eur 159 



Monarda 



aristata,Nutt 99 



fistulosa, L 99 



punctata, L 100 



Monardella, Benth 100 



odoratissima, Bentli 100 



Moneses 



uniflora, Gray 88 



Monolepis, Sclirad 117 



chenopodioides, Moq 117 



Montelia 



tamariscina, Gray 119 



Mulilenbergia 



gracilis, Gray 144 



gracillinaa, Torr 144 



pungeiis, Gray 144 



sylvatica, T. & G 144 



Texana, Thurb 144 



Mulgedium 



pulchellum, Nutt 87 



Munroa, Torr 147 



squarrosa, Torr 147 



Musci 154 



Musenium, Nutt 51 



divaricatum, Nutt 51 



Greenii, Gray 51 



tracliyspermurn, Gray 51 



Myosotis 



fruiicosa,ToYT 103 



Myosurus 



minimus, L 2 



Nabalus 



racemosus, Hook 86 



NAIADACE.E 132 



Nama,L 105 



dichotoma, Ruiz & Pav 105 



Nardosmia 



sagittata. Hook 55 



Nasturtium 



obtusum, Nutt 5 



officinale, R. Br 5 



palustre,DC 5 



sinuatum, Nutt 5 



Negundo 



aceroides, Moench 19 



Nicotiana 



attenuata, Torr , 110 



Nuphar 



polysepalum, Engelm 5 



NYCTAGINACE js 115 



Page. 



NYMPH.EACE.E 5 



Obione, Gaertn 117 



argentea, Moq 117 



canescens, Moq 117 



Suckleyana, Torr 118 



OEnothera 



albicaulis, Nutt 44 



biennis, L.... 44 



breviflora, T. & G 46 



canescens, Torr. & Frem 48 



caespitosa, Kutt 45 



coronopif olia, T. & G 44 



eximia, Gray 45 



guttulata, Geer 45 



Hartwegi, Benth 45 



Missouri ensis, Sims 45 



marginata, Nutt 45 



montana, Nutt 45 



Nuttallii,ToTr 46 



pinnatifida, Nutt 44 



serrulata, Nutt 46 



triloba,Nutt 44 



ONAGRACE^E 43 



Onosmodium 



Carolinianum, DC 100 



Opuntia 



arborescens, Engelm 49 



Camanchica, E. & B 49 



Missouriensis, DC 49 



Rafinesquii, Engelm 49 



ORCHIDACE^E 132 



Oreophila 



myrtifoUa, Nutt 18 



OROBANCHACE.E 



Ortuocarpus, Nutt 96 



luteus, Nutt 96 



Orthotrichum 



anomalum, Hedw 157 



Hallii, Sull. & Lesq 157 



Hutcbinsiae, Smith 157 



speciosum, Nees 157 



Utaheiise, Sulliv 157 



Oryzopsis 



micrantha, Thurb 145 



Osmorrhiza 50 



lreri8tyU8,'DC 50 



nuda/Torr 50 



Oxybaphus 



angustif olius, Sweet 115 



Cervantesii, Lag 115 



hirsutus, Sweet 115 



multiflorus, Torr 115 



nyctagineus, Sweet 115 



Oxyria 



digynn, Campd 122 



Oxtryopis 



arctica, R. Br 30 



campestris, L 30 



deflexa, DC 31 



Lamberti, Pursh 30 



multiceps, Nutt 30 



nana, Nutt 30 



splendens, Dougl 31 



Uralensis, L 30 



Pachypodium 



integrifolium, Nutt 9 



Pachystima, Raf 18 



Myrsiiiites, Raf 18 



