Description of Native Trees 



134. Hop-tree. Wafer Ash. Shrubby Trefoil. (Ptelea 



trifoliata.) 



LEAF : 3'-$', trifoliate, alternate ; leaflets, 3, entire, ovate or 

 long-ovate, apex pointed, base of the terminal one tapering. 

 FLOWER : small, greenish- white, in compound clusters, ill-scented ; 

 June. FRUIT : roundish, winged all around, often white and 

 ornamental in September. RANGE : Pennsylvania to Wisconsin, 

 and south ; low tree and shrub. (PI. XI.) 



135. Cockspur Thorn. (Crataegus crus-galli.) 



LEAF : 2 ; ~3', simple, alternate, serrate toward apex, obovate, 



base wedge-shaped tapering to a point, stemless, thick, glossy. 



FLOWER : white, 5-petalled, clustered ; June. FRUIT : globular, 



red, y$ diameter ; thorns long ; low tree and shrub. (PL IX.) 



136. White Thorn. Scarlet-fruited Thorn. (Crataegus 



coccinea.) 



LEAF : 2'-$', simple, alternate, doubly serrate, or with small 

 lobes, round-ovate, stem slender ; entirely smooth. FLOWER : 

 white or rosy- tinged, in large clusters ; May. FRUIT : bright red, 

 ovoid, Yi across, hardly edible ; low tree and shrub ; thorny. 

 (PI. IX.) 



137. Black Thorn. Pear Thorn. (Crataegus tomentosa.) 

 LEAF : 3'-s', simple, alternate, doubly serrate or even some- 

 what lobed, oval to ovate, stem somewhat margined ; thickish, 

 and apt to be downy beneath. FLOWER : white, clustered ; 

 May, June. FRUIT : orange or scarlet, } diameter ; low tree 

 and shrub ; thorny. (PI. IX.) 



138. Dotted Haw. (Crataegus punctata.) 



LEAF : 2'-3', simple, alternate, unequally serrate toward apex, 



obovate, base strongly wedge-shaped and entire, tapering into 



winged stems, thickish. FLOWER : white, clustered ; May, June. 



FRUIT : yellowish-red, whitish-dotted ; low tree and shrub ; thorny. 



139. Downy-leaved Hawthorn. (Crataegus mollis.) 

 LEAF : essentially as in 137 (of which it is probably a variety), 

 but rounder, and downy when young ; fruit larger. Illinois and 

 Michigan ; low tree and shrub ; thorny. 

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