384 



glandulosa 7. 



lobata 7. 



marylandica 7. 



nigra 7. 



Phellos 7, 



rubra 7. 



serrata 7. 



variabilis 7. 



velutina 7. 

 Ranunculaceae 33, 36, 55, 98. 

 Ranunculus abortivus 55. 

 Ehamnus caroliniana 85. 



carthartica 85. 



lanceolata 85. 

 Rhodora canadensis 13. 

 Rhus radicans 32. 

 Rosa Carolina 28. 



humilis 28. 



sp. 29. 

 Rcsaceae 10, 12, 19, 28, 29, 30, 31. 

 Rubiaceae 107, 124. 

 Rubus allegheniensis 19. 



frondosus 10, 19. 



nigrobaccus 10. 



saxatilis 19. 



villosus 19. 

 Rudbeckia triloba 126. 

 Rumex crispus 86. 



hydrolapathum 86. 



obtusifolium 86. 

 Rynchospora axillaris 120. 



glomerata 120. 

 Salicaceae 11. 

 Salix amygdaloides 11. 



Bebbiana 11. 



cordata mackenzieana 11. 



nigra 11. 

 Sambucus canadensis 87. 



pubens 87. 

 Sanicula canadensis 70. 

 Santalaceae 8. 

 Sapindaceae 32. 

 Sarcobatus vermiculatus 90. 

 Schizachyrium scoparium 37, 83. 

 Scirpus americanus 75, 121. 



atrovirens 38. 



campestris paludosus 121. 



cyperinus 38. 



fluviatilis 75, 121. 



georgianus 38. 

 Scrophulariaceae 37. 

 Secale cereale 41, 79. 

 Senecio aureus 84. 

 Silphium ])erfoliatum 123. 

 Sisyrinchium gramineum 107. 

 Slum cicutaefolium 121. 



latifolium 121. 

 Smilaceae 68, 88. 

 Smilax glauca 88. 



hispida 68. 



rotundifolia 68, 88. 

 Solidago altissima 43. 



bicolor 114. 



caesia 114. 



canadensis 6, 114. 



flexicaulis 114. 



graminifolia 2. 



missouriensis 6. 



rugosa 6, 43, 114. 



sempervirens 43. 



serotina 114. 



