INDEX . 



I The names of plants described or regularly enumerated, as well as those of natural orders, are printed in small capitals. 

 Sj'nonyms, and the names of genera and species variously mentioned, but not characterized, are in Roman.] 



PL 



Abittilon parvulum, 23. 

 SoNOR.!:, 23. 

 Texense,23. 

 Wrightii,23. 

 Acacia constricta, 54. 

 coulteri, 53. 

 cuspidata, 54. 

 Greggii, 53. 

 rcemeriana, 54. 

 tephroloba, 54. 

 Wrightii, 53. 

 Achillea Millefolium, 98. 

 Achyropappus anthemoides, 95. 

 Actinella argentea, 96. 



BlGELOVII, 96. 



linearifolia, 97. 

 odorata, 97. 

 Eichardsonii, 96. 



SCAPOSA, 97. 



ACTINOMERIS longifolia, 89. 



Wrightii, 89. 

 Adenophyllum Wrightii, 92. 

 Adolphia infesta, 28. 

 Algakobia glandulosa, 51. 

 Amauria dissecta, 96. 

 Amblyolepis setigeka, 96. 

 Ambrosia psilostachya, 86. 

 Ammania dentifera, 55. 

 Wrightii, 55. 

 Amokeuxia palmatifida, 26. 

 schiedeana, 26. 

 Wrightii, 26. 

 Anacardiaceje, 27. 

 Anemone Caroliniana, 8. 

 Anisocoma, 104. 

 , ■WR. — 15. 



Anoda crenatiflora, 23. 



HASTATA, 23. 



lanceolata, 23. 

 parviflora, 23. 

 Wrightii, 22. 



ApHANOSTEPHUS HUMILIS, 78. 



ramosissimus, 78. 

 Aplodiscus, 80. 

 Aplopappus gracilis, 81. 



laricifolius, 80. 

 ramulosus, 80. 

 spinulosus, 81. 

 Apodantheba undulata, 60. 

 Aqhilegia cserulea, 9. 



leptocera, 9. 

 macrantha, 9. 

 Aralia humilis, 65. 



pubescens, 65. 

 Abaliacex, 65. 

 Aeenabia Benthamii, 18. 

 diffusa, 18. 

 nemorosa, 18. 

 SAXOSA, 18. 



Artemisia Canadensis, 98. 



dracunculoides, 98. 



filifolia, 98. 



ludoviciana, 98. 



Me.\icana, 98. 

 Aspicabpa hyssopifolia, 30. 



longipes, 30. 

 Astee angustus, 76. 



blepharophyllus, 77. 

 caricifolius, 76. 



DIVARICATUS, 76. 



falcatus, 76. 



