134 



Sea Spear-grass, 3G. 

 Secale, 36. 



Sea Grouudsel-tree, 92. 

 Sedge, 9. 



Sedum, 47, 80, 107. 

 Sea Saud-reed, 90. 

 Seedbox, 59. 

 Selaginella, 82, 98. 

 Selaginellacea% 98. 

 Self-heal, 39. 

 Senecio, 5, 25, 110. 

 Senna, 74. 

 Sensitive Fern, 52. 

 Sensitive Plant, 74. 

 Serieoearpus, 63, 109. 

 Service Berry, 12. 

 Setaria, 80, 101. 

 Shad Bush, 12. 

 Shag-bark Hickory, 28. 

 Sheep Laurel, 38. 

 Sheep's Fescue, 40. 

 Shepherd's Purse, 8. 

 Shepherdia, 11. 

 Shield Fern, 52. 

 Shin Leaf, 57. 

 Shrubby Althea, 82. 

 Sicyos, 77, 108. 

 Side-saddle Flower, 33. 

 Silene, 25, 39, 44, 104. 

 Silkweed, 56, 64. 

 Silverberry, 30. 

 Silver-weed, 32. 

 Sinapis, 20, 104. 

 Sisymbrium, 29, 46, 



104. 

 Sisyrinchiura, 33, 99. 

 Sium, 62, 108. 

 Skullcap, 67, 71. 

 Skunk Cabbage, 5. 



Sleepy Catchtiy, 25. 

 Slender Blue Flag, 33. 

 Slippery Elm, 8. 

 Smartweed, G6. 

 Smilaeiua, 28, 34, 99. 

 Smilax, 34, 39, 47, 99. 

 Smooth Alder, 6. 

 Smoke Tree, 43. 

 Snakehead, 77. 

 Snakeroot, 39, 85. 

 Snow-ball Tree, 36. 

 Snowberry, 44. 

 Snowdrop Tree, 30. 

 Snow-on-the-Mountain, 



66. 

 Soapwort, 68. 

 Soft Chess, 36. 

 Solanacete, 112. 

 Solanum, 47, 70, 112. 

 Solidago, 75, 89, 92, 



109. 

 Solomon's Seal, 28. 

 Sonchus, 46, 69, 111. 

 Sophora, 74. 

 Sobaria, 37, 106. 

 Sorbus (Pyrus), 23. 

 Sorghastrum, 90, 102. 

 Sorrel, 25. 

 Southernwood, 76. 

 Sow Thistle, 46, 69. 

 Spanish Bayonet, 67. 

 SparganiacCtV, 99. 

 Sparganium, 59, 99 . 

 Si)artina, 81, 101. 

 Spear Grass, 36. 

 Spearmint, 78. 

 S|)e;irwort, 60. 

 Speckled Alder, 6. 

 Specularia, 48, 111. 



Speedwell, 13, 34, 49. 

 Spergida, 19, 104. 

 Spergularia, 19, 104. 

 Sphenopholis, 50, 102. 

 Spiee Bush, 9. 

 Spiderwort, 40. 

 Spike Grass, 86. 

 Spike Rush, 35, 59. 

 Spiked Loosestrife, 69. 

 Spikenard, 58. 

 Spiraea, 21, 37. 53, 54, 



68, 106. 

 Spiranthes, 80, 90, 91, 



98. 

 Spleenwort, 51. 

 Sporobolus, 90, 93, 



102. 

 Spotted Mediek, 45. 

 Spotted Wintergreen, 



64. 

 Spreading Dogbane, 58. 

 Spring Beauty, 12. 

 Spruce, 18. 

 Spurge, 21, 66. 

 Spurrey, 19. 

 Squirrel-tail Grass, 93. 

 Staehys, 70, 77, 114. 

 Staff Tree, 40. 

 Staghoru Sumach, 57. 

 Star Flower, 24. 

 Star Grass, 23, 58. 

 Star Thistle, 63. 

 Star of Bethlehem, 28. 

 Starwort, 5, 25. 

 Statice, 80. 

 Steeple Bush, 68. 

 Steironema, 71, 111. 

 Stellaria, 5, 25, 104. 

 Stenophyllus, 86, 100. 



