Rockweed, 162, 163. 
Roman Wormwood, 64. 
Rosa, 50. 
Rosacee, 47. 
Rose Acacia, 45. 
Rose Family, 47. 
Rough Bed-straw, 59. 
Rough Meadow Grass, 126. 
Round-leaved Cornel, 58. 
Round-leaved Violet, 35. 
Roxbury Waxwork, 43. 
Royal Fern, 136. 
Rubiacee, 59. 
Rubus, 49. 
Rubus odoratus, 19, 49. 
Rudbeckia, 65. 
Rudbeckia hirta, 16, 65. 
Rue Anemone, 29. 
Rue Family, 42. 
Rumex, 92. 
Running Swamp Blackberry, 50. 
Ruppia, 104. 
Rush Family, 113. 
Russell, John L., 24. 
Rutacee, 42. 
Rye, 128. 
Sagedia, 155. 
Sagina, 39. 
Sagittaria, 106. 
St. John’s-wort, 37. 
St. John’s-wort Family, 37. 
Salicacee, 99. 
Salicornia, 90. 
Salix, 99. 
Salix candida, 12. 
Salix myrtilloides, 12, 99, 100. 
Salsola, 90. 
Salt-marsh Fleabane, 64. 
Salt-marsh Grass, 125. 
Saltwort, 90. 
Sambucus, 59. 
Sandal-wood Family, 93. 
Sand Grass, 125. 
195 
Sand Spurry, 39. 
Sand-wort, 38. 
Sanguinaria, 32. 
Sanicula, 56. 
Santalacee, 93. 
Sapindacee, 43. 
Saponaria, 37. 
Sarracenia, 32. 
Sarraceniacer, 32. 
Sarsaparilla, 57. 
Sassafras, 93. 
Saxifraga, 51. 
Saxifragacee, 51. 
Saxifrage, 51, 52. 
Saxifrage Family, 51. 
Scapania, 145. 
Scarlet-fruited Thorn, 50. 
Scarlet Oak, 97. 
Scheuchuzeria, 106. 
Schistidium, 139. 
Schistidium (Grimmia), 170. 
Schollera, 114. 
Scirpus, 116. 
Scleranthus, 39. 
Scotch Lovage, 56. 
Scotch Pine, 101. 
Scouring Rush, 133. 
Scrophularia, 78. 
Scrophulariacee, 78. 
Scutellaria, 82. 
Scytosiphon, 163. 
Sea Blite, 90. 
Sea Cabbage, 166. 
Sea Club Rush, 117. 
Sea-cocklebur, 65. 
Sea-colander, 163. 
Sea Rocket, 35. 
Seashore Plantain, 75. 
Scaside Crowfoot, 30. 
Seaside Goldenrod, 63. 
Seca Lettuce, 166. 
Sea Milkwort, 76. 
Seaweeds, 157. 
Secale, 128. 
