Description of Native Trees 



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



trifoliata.) 

 Leaf : 3-5', 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, ]^' diameter ; thorns long ; low tree and shrub. (PI. IX.) 



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



coccinea.) 

 Leaf: 2-5', 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, %' across, hardly edible ; low tree and shrub ; thorny. 

 (PI. IX.) 



137. Black Thorn. Pear Thorn. (Crataeg^is tomentosa.) 

 Leaf : s'-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 Hai^. (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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