Pyenanthemum 1$0 



See Kellla .' . leo 



Pyrolaceas 143 



pyroia ;; ;;; 143 



Pyrus J 14 



Quamasla ^4 



Scilla (4 



Quercus ' ' 79 



Hadula 24 



Ranunculaceee 94 



RaRunculus 96 



Raphanus 102 



Rapistrum I04 



See Neslia 104 



Rhamnaceee 128 



Rhamnus 128 



Rlifxia .'.'.".'.'.'.'.'.;; 135 



Rhus 125 



Riccia 24 



Rlbes 108 



Rhododendron 144 



See Azalia ...'.. 144 



Rhynocosteglum 21 



Robinla II7 



Roripa 102 



Nasturtium 102 



Rosacea , 109 



Rosa .....!..! 113 



RublacesB [ Igg 



RubuB . . . . 109 



Rudbeckla 187 



Rumex 82 



Ruppla 30 



Rutacese 122 



Rynchosponi 4g 



Sabbatia I49 



Sagrina . . . 91 



Saglttaria 31 



Salicacese .........'. 75 



Sallcornla ' gg 



Salix -.!....!.....! 76 



Salsola 86 



Salvlniacese 14 



Salvlnea 14 



Sambucus ' uq 



Sanguinaria 99 



Sanguisorba 113 



Sanicula . 139 



Santalacese 82 



Saponaria 89 



Saponaria ^9 



See Vaccaria S9 



Sarothra 131 



Sarraceniaceee | lOg 



Sarracenla 1O6 



Sassafras . . 99 



Saururacess 74 



Saururus 74 



Saxffragacee . 107 



Saxifraga 107 



Scapania 24 



Scheuchzerlacete 31 



Scilla 64 



See Quamasia .'. . . . 64 



Sclrpus 46 



Scirpus 45 



See Fimbrystllls 46 



Scleranthus 93 



Seleria !!!!!!!.!!! 48 



Scollopendrium ' -lo 



See Phyllltus .'.'.'.'.'.".".'.".'.'.' 12 



Scrophularlacese [ 153 



Scrophularia .'..[ 154 



Scutellaria 156 



Sedum ..'.'.'.'.'.'! 107 



Selaginellacee 15 



Selaginella 16 



Senecio 191 



Senecio 191 



See Synosma .'.'.'.*.*.'.'.'.' 191 



Seriocarpus '. . . . . I81 



Sesuvlum .'..'.'.'.'.'.".'" 88 



Setaria ^ ............ .. 34 



See Ixophorus .'.'."...... .' 34 



209 



Shepherdia t. jj^ 



See Lepargyraea 134 



Sicyos ' " j~r, 



Sleglingia '.'. «« 



•SUene .'.'.'.■.■.■.■.■■ 89 



Simarubacess .... , o., 



sinapis .'.".'.■.";.■.■;.:■ 101 



>S isimbrium iqj 



See Stenophragma 105 



Sisyrlnchium ' ' ' rs 



f?'^ :::::::::;::; uo 



•i'""* 141 



See Berula ^.l 



Smilacese 67 



Smilacena . . 65 



See Vagnera 65 



And Unifolium .... oc 



Smilax '.'.'.'.'.'.'. 67 



Solanacese \ jgA 



Solanum 152 



Solea 133 



See Cubellum \z'^ 



Solidago j-r^ 



Sotidago joi 



See Euthamia \%\ 



SonchuB 1 -r 



s?phJa ....:::::::::::::::; lo4 



:>\symhr%um 104 



^J"'"* •• 118 



bparganiaceae 27 



Sparganlum 27 



Spartina ' ' ' 30 



Spathyema gg 



Symplocarpus 58 



Specnlaria . 174 



See Legouzia . ' 174 



Spergula 92 



Sphagnum jl 



Spirea 109 



Spiranthes \\ 71 



See Gyrostachys .'.".'. 71 



Spiradella 69 



Lemna _ _ 59 



Sporobolus .*.'.'.".' 36 



Stachys 159 



Staphyleacete . . . . 127 



Staphylea . . . . 127 



Steironema ' 147 



Lysamachia [[ _ 147 



Stenophyllus 46 



Scirpus ; ; ; 46 



Stenophragma 105 



Sisymbrium 105 



Streptopus 65 



Suaeda gg 



See Dondia gg 



Symphorlcarpos 171 



Symphytum 155 



Syndesmon 95 



Anemone 9s 



Synosma 191 



Senecio 191 



Syntherisma 32 



Panicutn 3j 



Tanacetum 190 



Taraxicum 175 



Taxaceas 26 



Taxua . .. . 26 



Tetragonanthus 149 



Tetrophis \ 21 



Teucrlum 155 



Thalesla [[[ 157 



Aphyllon H7 



Thalictrum gj 



Thaspium \\ 139 



Thlaspl \\\ 101 



Thuja ." .' 26 



Thymelacese 134 



Tiarella .' ' .' 107 



Tiedmannia ijg 



See Gxypolle jgg 



Tilllacese 129 



Tiiiia !!.';;.;; 129 



