Skullcap . 153 
Skunk Cabbage . 22 
Smartweed . 59 
Smilacina . 32 
Smilax . 36 
Sneezeweed . 199 
Snow on-the-Mountain . 105 
Soapwort . 63 
Solanum Dulcamara . 157 
nigrum . 157 
Solidago bicolor . 179 
caesia . 179 
canadensis . 180 
juncea . 180 
“ graminifolia . 181 
Solomon’s Seal, False . 32 
Solomon’s Seal, True . 34 
Sorrel Wood . 100 
Sparganium eurycarpus . 18 
Speedwell . 163 
Spiderwort . 23 
Spigelia marilandica . 13,* 
Spikenard . 32 
Spiranthes . 55 
Spirea tomentosa . 84 
Spirea salicifolia. 84 
Spring Beauty . 65 
Squirrel Corn . 77 
Stachys palustris . 155 
Star Flower . 137 
Star Grass, Yellow . 42 
Star-of-Bethlehem . 41 
Steeplebush . 84 
Steironema ciliatum . 136 
Stellaria . 60 
St. Johnswort, Common . 110 
“ Marsh . Ill 
Stitchwort . 60 
Strawberry, Wild . 85 
Streptopus . 34 
Sundews . 81 
Sundrops . 120 
