522 



INDEX. 



Page. 



Senecio Andinus, Nutt 189 



aureus, L 189 



canuB, Hook 190 



eremophilus, Rich 191 



exaltatus, Nutt 188 



Fendleri, Gray 190,423 



filifolius, Nutt 191 



Frfimontii, T. & U 192 



hydrophilus, Nutt 189 



multilobatus, T. & G 191 



lugens, Eioli 188 



Serra,Hook 189 



triangularis, Hook 189 



Sesuvium Portulaoastrum, L 120 



Setaria viridis, Beau v 394 



iSeuUrtiajKih 490 



croeea, Wood ; 490 



Sheplierdia argentea, Nutt 318 



Canadensis, Nutt 318 



SibbaUia procumiens, L 89 



Sida hederaoea, Torr 48 



malvwflora, DC 46 



Sidalcea, Gray 46 



Candida, Gray 46 



malvEeflora, Gray 46 



Silene, L. ..^. 430 



aoaulis, L 36, 432 



antirrliina, L 36, 432 



Baldwinii, Nutt 431 



Bolanderi, Gray 431 



Bridgesii, Eohr 433 



Californioa, Dur 431 



Douglasii, Hook 36,431 



. Drwmmondn, Hook 37, 432 



Engelmanni, Eohr 433 



Greggii, Gray 43I 



Hookeri, Nutt 43I 



incompta. Gray 432 



laciniata, Cav 43I 



Menziesii, Hook 36,432 



nivea, DC 43I 



ovata, Pursh 432 



Pennsylvanica, Mx 431 



regia, Sims 43I 



rotnndifolia, Nutt 431 



Scouleri, Hook 432 



stellata. Ait 432 



Wrightii, Gray 431 



Silene.^ ' 430 



Simsia, Pers 423 



cauesoens. Gray 423 



Sinapis, L 2g 



Sitanion elumoides, Eaf. 392 



Sisymbrium Californicum, S. Watson 23 



canescens, Nutt. '. 23 



junceum, Bieb 23 



reflexum, Kell ig 



Sisyrinchinm Bermudiana, L 342 



grandiflorum, Dougl 342 



Sium angustifolium, L 121 



Page. 



Sium lineare, Mx 121 



Smelowskia, Meyer 24 



Califomiea, Gray 23 



calycina, Mey 24 



Smilaoina amplexieaulis, Nutt 345 



racemosa, Desf. 345 



stellata, Desf. 345 



SOLANACKJE 274 



Solanum nigrum, L 274 



umbelliferum, Esoh 274 



Solidago elongata, Nutt 155 



gigantea. Ait 156 



Guiradonis, Gray 154 



lanceolata, L 156 



nana, Nutt 155 



nem oralis, Ait 155 



occidentalis, T. & G 156 



pumila, T. & G 155 



Eadula, Nutt 155 



speciosa, Nutt 155 



stricta, Aitr 154 



Virga-aurea, L. 154 



Sonclius asper, Vill 208 



Sparganium eurycarpum, Eug 337 



minimum, Bauh 337 



Spartina gracilis, Trin 381 



Specularia perfoliata, DC 209 



Spergularia media, Presl 42 



Sphcenosciadium capitellatum, Gray 126 



Sphseraloea, St. Hill 48 



acerifolia, Nutt 48 



angustifolia, Spach 48, 417 



Emoryi, Torr 48 



Fendleri, Gray 48,417 



incana, Torr 47,48,417 



Lindlieimeri, Gray 48 



Wrightii, Gray 48 



Spiraa ariaafolia, Sm 81 



caespitosa, Nutt 81 



dumosa, Nutt 80 



opalifolia, L 80 



Spiranthes Eomauzoffiana, Cham 341 



Sporobolus airoidea, Torr 375 



aspmfolius, Thurb 375 



cryptandrus, Gray 375 



ramulosus, Kth ^... 376 



Spraguea, Torr 44 



panionlata, Kell 44 



umbellata, Torr 44 



Staohys palustris, L 237 



Stanleya, Nutt 24 



fruticosa, Nutt 24 



hetm-opliylla, 'Sxitt 24 



integnfolia, James 24 



pinnatifida, Nutt 24 



viridiflora, Nutt 25 



Stellaria borealis. Big 33 39 



crassifolia, Ehrh 38 417 



graailis, Rich 39 



Jamesii, Torr 33 



