294 



INDEX. 



Rosa 137 



ROSACEAE 130 



Rose 137 



Rock 92 



Rose family 130 



Rotala 168 



RUBIACEAE 233 



Rubus 136 



Rudbeckia 261 



Rumex 83 



Rush 54 



Spike 50 



Wood 57 



Rush family 54 



Russian thistle 88 



Ryegrass 40 



Sagebrush 253 



Scabland 254 



Sagittaria 17 



St. Johns-wort 1 63 



St. Johnswort family 163 



SALICACEAE 72 



Salix 73 



Salsify 246 



Salsola 88 



Sallbush 88 



Sambucus 235 



Sandalwood fam \ly 80 



Sandwort 100 



Sanicle 177 



Sanguisorba 138 



Sanicula 177 



SANTALACEAE 80 



Sarsaparilla, Wild 175 



Saxifraga 127 



Saxifrage 127 



Saxifrage family 124 



SAXIFRAGACEAE 125 



Scabland sagebrush 254 



Scheuchzeria 16 



SCHEUCHZERIACEAE 16 



Scirpus 51 



Scrophularia 223 



SCROPHULARIACEAE 219 



Scutellaria 214 



Sedge 43 



Sedge family 42 



Sedum 124 



Selaginella 7 



SELAGINELLACEAE 6 



Senecio 274 



Service berry 133 



Sheep sorrel 84 



Shepherd's purse 123 



Shooting star 190 



Sibbaldia . 140 



Sidalcea 162 



Sieversia 139 



Silene 96 



Sisymbrium 119 



Sisyrinchium 66 



Sitanion 42 



Slum 184 



Skullcap 214 



Skunk cabbage, Yellow 52 



Snappers 80 



Snowberry 236 



SOLANACEAE 217 



Solanum 218 



Solidago 272 



Solomon's seal, False 65 



Sonchus 249 



Sorrel, Sheep 84 



Sow thistle 249 



SPARGANIACEAE 13 



Sparganium 13 



Spartina 38 



Specularia 240 



Speedwell 225 



Spergula 97 



SPERMATOPHYTA 8 



Sphaeralcea 162 



Sphaerostigma 174 



Sphenopholis 30 



Spike rush 50 



Spiraea 135 



Spirodela 53 



Sporobolus 25 



Spruce, Douglas 12 



Engelmann 11 



Spurge 157 



Spurry 97 



Squirrel corn 112 



tail 41 



Stachys 217 



Stafftree family 159 



Star-flower 191 



Steironema 191 



Sticky laurel 161 



Stipa 22 



Stonecrop 124 



Stonecrop family 124 



Strawberry 141 



Strawberry blite 89 



Streptopus 63 



Sugar Bowls 103 



Sumac 158 



Sunflower 277 



Sweet cicely 177 



clover 149 



coltsfoot 252 



Symphoricarpos 236 



Synthyris 224 



