GENERA AND SPECIES 



HlPPOCASTANACE^E . . 



dEsculus glabra . 

 sEsculus octandra . , 

 jEsculus hippocastanum. 



HORSE-CHESTNUT FAMILY 



Ohio Buckeye . . . 50 



Sweet Buckeye . , . . 54 



Horse-chestnut . . . 54 



ACERACE.E . 



Acer pennsylvanicum 

 Acer spicatum 

 Acer sacchartun 

 Acer saccharinum . 

 Acer rubrum . 

 Acer platanoides . 

 Acer pseudo-platanus 

 Acer negundo. 



MAPLE FAMILY 

 Striped Maple 

 Mountain Maple . 

 Sugar Maple 

 Silver Maple 

 Red Maple . 

 Norway Maple . 

 Sycamore Maple . 

 Box Elder . 



60 

 64 

 66 

 73 

 77 

 82 

 82 

 85 



ANACARDIACE^ . 

 Rhus hirta 

 Rhus copallina 

 Rhus vernix . 



SUMACH FAMILY 

 Velvet Sumach . 

 Dwarf Sumach . 

 Poison Sumach . 



94 



LEGUMINOS^E 



Robinia pseudacacia 

 Robinia viscosa 

 Cercis canadensis . 

 Gymnocladus dioicus 

 Gleditsia triacanthos 

 Cladrastis lutea 



PEA FAMILY 



Locust 



Clammy Locust . 



Redbud 



Kentucky Coffee-tree 



Honey Locust 



Yellow-wood 



97 

 103 

 104 

 109 



112 



116 



ROSACE^E 



Prunus nigra 

 Prumts americana 

 Prunus pennsylvanica 

 Prunus virginiana 

 Prunus serotina 

 Pyrus coronaria . 

 Pyrus americana . 

 Pyrus aucuparia . 

 Pyrus sambucifolia 

 Cratczgus crus-galli 

 Cratcegus coccinea . 

 Crat&gus mollis 



ROSE FAMILY 



Canada Plum . . .119 



Wild Plum . . . .120 



Wild Red Cherry . .122 



Choke Cherry . . .125 



Black Cherry . . .128 



Crab Apple. . . .133 



Mountain Ash . . .136 



European Mountain Ash . 138 



Elderleaf Mountain Ash . 140 



Cockspur Thorn . . .140 



White Thorn . . -143 



Scarlet Haw . . .144 



xii 



