350 INDEX. 



Hexandria Class 83 



Hickory, or White Walnut (Carya), the genus of . 195 



Hippuris, its very simple structure .... 

 Honey Locust (Gieditschia), the genus and species 



a leguminous tree with a regular flower 



45 



204 



14 



73 



203 



127 



94 



67 



61 



12 



Honeysuckle (Lonicera), how known 



Hop (Humulus), the genus of . 



Horehound (Marrubium), the genus of 



Horse-chesnut (yEsculus), the genus of 



Hound's-tongue (Cynoglossum), the genus 



Houstonia, its generic character 



Hylum or umbilical scar 



Hypnum, its character 214 



I. 



Icosandria Class, how known 110 



Indian Cress, Nasturtium (Tropaeolum), the genus of . 98 

 Indian Corn (Zea), peculiarities of its structure, and prone- 



ness to hybridism ....... 49 



its genus ....... 190 



Indian Hemp (Apocynum), the genus, and manner of en- 

 trapping flies 75 



Indian Ginger, Asarabacca, (Asarum), the genus of . 186 

 Indian Potatoes, &tc (Apios), the genus . . 157, 158 

 Indigo plant (IndigoferaJ, the genus .... 158 

 Inula American (Chrysopsis) the genus of . . 171 

 Iris (Flower de Luce), the family and genus of .57 

 Isanthus, the flower nearly equal, its genus . . . 126 

 Iva, the genus of 176 



J. 



Juniper (Juniperus), the genus of .... 208 



Judas tree (Cercis), with 10 separate stamens and the 



carina of 2 petals ....... 13 



Juice proper of vegetables, sometimes milky, or of vari- 

 ous colors • 245 



from what and how produced — different 



in different plants — decomposed by similar chemical 

 agents — the precipitate, resinous and ligneous matter 246 

 contains similar elements with the sap, but 



in different proportions, as Carbon, Hydrogen, and 

 Oxygen — other materials probably absorbed from the 



soil . 247,248 



— . its different secretions 248 



K. 



Kalmia (Calico-bush, Spoon-wood), the genus . . 105 

 Kidney-bean (Phaseolus), how known from Dolichos or 



Lima Bean 157 



