INDEX. 



875 



Silver-Weed, sp. of Potentilla, . 

 Sinapis, Mustard, . 

 Sisymbrium, Hedge-Mustard, 

 Sisyrinchium, Blue-eyed Grass, 

 Slum, Water-Parsnip, 

 Skull-Cap, Scutellaria, . 

 Skunk-Cabbage, Symplooarpus, , 

 Sloe, sp. of Prunus, 

 Smartweed, sp. of Polygonum, . 

 Smilacina, False Solomon's Seal, 

 Smilax, Greenbrier, . 

 Sneak-head, Chelone, 

 Snapdragon, Antirrhinum, 

 Sneezeweed, Helenium, . 

 Sneezewort, sp. of Achillea, 

 Snow-Ball-Tree, sp. of Viburnum, 

 Snowberry, Sytnphoricarpus, . 

 Snowdrop, Halesia, . . 

 Soapwort, Saponaria, 

 Solanum, Nightshade, . 

 Solea, Green Violet, .. 

 Solidago, Golden-Rod,. . 

 Solomon's Seal, Polygonatum, . 

 Sonchus, Sow-Thistle, . 

 Sorghum, Broomcorn, 

 Sorrel, Rumex, 

 Sorrel-Tree, Oxydendrum, 

 Sour Gum-Tree, Nyssa, . 

 Sour- Wood, Oxydendrum, 

 Southern Buckthorn, Bumelia, 

 Sow-Thistle, Sonchus, 

 Spanish Bajonet, Yucca, 

 Spanish Needles, sp. of Bidens, 

 Sparganium, Bur-Reed, . 

 Spartina, Cord-Grass, 

 Spatter-Dock, Nuphar, ■; 

 Spear-Grass, Poa, 

 Spearmint, sp. of Mentha, 

 Spearwort, sp. of Ranunculus, . 

 Specularia, Venus' Looking-Glass, 

 Speedwell, Veronica, . 

 Spergula, Spurrey, 

 Spergularia, Spurrey-Sandwort, 

 Spermacoce, Button-Weed, 

 Spice-Bush, sp. of Benzoin, 

 Spider-wort, Tradescantia, 

 Spigelia, Pink-root, . 

 Spike-Grass, Brizopyrum and TJniola, 



