138 PHYSICAL GEOGKAPHY. 



In a prairie region like ours the farmer selects the finest 

 lands for cultivation, every acre of which is ready for the 

 plow, and sets aside the more broken and less tillable portions 

 for his future woodlands. Thus he may not only choose the 

 location of his fields and woodlands, but also the kinds of 

 crops, whether of grain or trees, that shall be grown upon each. 



A CATALOGUE OF THE INDIGENOUS FOREST TREES OF 



IOWA. 



Acer Dasycarpum— White maple. 



Acer saccharinum. — Sugar maple. 



JEsculus glabra. — Buckeye. 



Betula nigra. — Water birch. 



Carya alba. — Hickory. 



Carya amara. — Pig-nut hickory. 



Carya olivaeformis. — Pecan. 



Celtis occide talis. — Hackberry. 



Cerasus serotina.— Black wild cherry. 



Fraxinus Americana. — White ash. 



Oleditscliia triacanthus. — Honey locust. 



Gymnocladus Canadensis. — Kentucky Coffee bean. 



Juglans cinerea. — Butternut, White walnut. 



Juglans nigra —Black walnut. 



Negundo aceroides. — Box-elder. 



Platanus occidentals. — Button, Sycamore. 



Populus monilifera. — Cotton-wood. 



Populus tremuloides. — Aspen. 



Quercus alba. — White oak. 



Quercus imbricaria. — Laurel oak. 



Quercus macrocarpa—Bur oak. 



Quercus tinctoria. — Black oak. 



TUia Americana. — Linden, Bass wood. 



TJlmus Americana. — Common elm. 



Ulmus fulva. — Slippery elm. 



Some of the trees enumerated in this catalogue can hardly 

 be said with strict propriety to be a part of our forest trees 

 on account of their scarcity. A few others might also be men- 

 tioned that occur in small numbers within the State, besides 

 several species of the smaller class of trees; but the object of 

 this catalogue is only to give a general view of the arboreous 

 flora of the State to those who are not acquainted with it. 



