381 



Claytonia virginica 50. 

 Cleome spinosa 90. 

 Collomia linearis 116. 

 Comandra pallida 8. 



umbellata 8, 83. 

 Convallariaceae 40, 128. 

 Convolvulaceae 4, 52. 

 Convolvulus sepium 52. 

 Cracca virginiana 97. 

 Crataegus cerronus 21. 



coccinea 23. 



Douglasii 23. 



mollis 24. 



oxycantha 21, 23. 



phaenopyrum 23. 



pinnatifida 24. 



Pringlei 23, 26. 



punctata 21, 22. 



tomentosa 20, 21, 23. 

 Cydonia vulgaris 22, 23, 26. 

 Cyperaceae 38, 43, 46, 47, 68, 75, 



87, 93, 114, 120, 121. 

 Cyperus cylindricus 46. 



esculentus 46. 



filiculmis 46. 



lancastriensis 46. 



ovularis 46. 



refractus 46. 



strigosus 46. 



Torreyi 46. 

 Decodon verticillata 68, 72. 

 Deringia canadensis 53. 

 Dianthus caryophyllus 101. 

 Diodia teres 124. 

 Distichlis spicata 90. 

 Dryopteris Thelypteris 17. 

 T'uchesnea Indica 30. 



Dulichium arundinaceum 43. 

 Eatonia pallens 55. 



pennsylvanica 55. 

 Eleocharis palustris 56. 

 Elephantopus carolinianus 3. 

 Elymus canadensis 64. 



striatus 64. 



virginicus 64. 

 Epilobium angustifolium 16. 



coloratum 16. 

 Eragrostis pectinacea 102. 

 Ericaeae 13, 129. 

 Erigeron annuus 43. 

 Erysimum asperum 90. 

 Eupatorium perfoliatum 56. 



purpureum 56. 



rotundifolium 56. 

 Euphorbia corollata 77, 104. 



maculata 77, 119. 



marginata 104. 



Preslii 119. 

 Euphorbiaceae 119. 

 Euthamia graminifolia 2, 43, 114. 

 Fabaceae 97, 99, 103, 106, 111, 112. 

 r agaceae 7. 

 Felix fragilis 9. 

 FraxinviS lanceolatus 60. 



viridis 60. 

 Gaylussacia baccata 14. 



resinosa 14. 



Geraniaceae 81. 

 Geranium maculatum 81. 

 Glaux maritima 121. 

 IHelianthus angustifolius 61. 



annuus 61. 



decapetalus 61. 

 Heliopsis helianthoides 44. 



