INDEX. 



Abortion and ingraftment, great sources of change in the 



vegetable kingdom ....... 65 



Abortion of the fruit, supposed to exist naturally in the 



class Syngenesia 160, 161 



JEquulis. the order of, how characterized and subdivided 161 



yEscbynomene, the genus of 157 



Affinity, the nature of, in plants 9 



Agrimony (Agrimonia), how known 



Alder (Alnus), the genus of . . 



Aloe American (Agave), the genus and uses 



Amelanchior, Shad-blossom (Aronia), the genus 



Amorpha, its anomalous character as a papilionaceous 

 flower ..... . . 



Amygdalus, the genus of the Peach and Almond 



Anemone, the genus of; remarks on Pulsatilla 



Jlngiospermia, the order of .... 



Angelica-tree, &c. (Aralia), how known 



Aplectrum (Cymbidium hiemale), the genus of 



Arethusa bulbosa, its generic trait 



Arrow-head (Sagittaria), the genus of 



Artichoke (Cynara), the genus of . 



Asparagus, its generic character 



Asperifolia, the natural order of 



Autumnal Hawkvveed (Apargia), the genus of . • . 



Azalea (Swamp-Honey6uckle), the genus and species 



B. 



113 



191 



89 



114 



13, 151 



25 



122 



129 



82 



184 



183 



192 



164 



86 



66 



163 



103 



Bald Cypress fSchubertia), the character of 199 



Barberry (Berberis), the genus of . 90 



Bare, composed of 4 parts ...... 256 



Cuticle, its character ; how obtained for examina- 



tion • 256,257 



its exterior layer, porous . . . 257 



Cellular Integument of, examined . . . 258-9 



30 



