INDEX. 



375 



Silver-'Weed, sp. of Potcntilla, 

 Sinapis, Mustard, . 

 Sisymbrium, Hedge-Mustard, 

 Sisyrinchium, Blue-eyed Grass, 

 Sium, Water-Parsnip, 

 Skull-Cap, Scutellaria, . 

 Skunk-Cabbage, Symplocarpus, 

 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, Symphoricarpus, 

 Snowdrop, Halesia, 

 Soapwort, Saponaria, 

 Solan um, 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 Uniola 



