Trees, Shrubs and Vines 



140. English Hawthorn. (Crataegus oxyacantha.) 

 LEAF : i*4'-3', simple, alternate, obovate, base wedge-shaped, 

 serrate and lobed. FLOWER : white, rosy, or red, clustered, in May. 

 FRUIT : small, red ; introduced, but now slightly spontaneous ; 

 not so thorny as native species ; low tree and shrub. (PI. X.) 



141. Washington Thorn. (Crataegus cordata.) 

 LEAF : 3'-$', simple, alternate, serrate, often 3~5-lobed, tri- 

 angular, or broad -ovate, base often a little cordate, thinnish, stem 

 slender. FLOWER : white, clustered ; June. FRUIT : red, very 

 small. Virginia and west ; low tree and shrub ; thorny. 



142. Summer Thorn. Summer Haw. (Crataegus flava.) 

 LEAF : 3'-$', simple, alternate, unequally serrate and slightly 

 lobed toward apex, obovate, base wedge-shaped and entire, thin. 

 FLOWER : white, in small (2-6) clusters ; May. FRUIT : reddish, 

 juicy, large. Virginia, low tree and shrub ; thorny.. 



143. Wild Yellow or Red Plum. (Prunus americana.) 

 LEAF : 2' -3', simple, alternate, rather coarsely sharp-serrate, 

 oval to slightly obovate, apex tapering. FLOWER : white, in 

 small side-clusters, in early spring, before or with the leaves. 

 FRUIT : orange, yellow or red, %'-%' diameter ; low tree, more 

 or less thorny. 



144. Southern Buckthorn. (Bumelia lycioides.) 

 LEAF : 2'-4', simple, alternate, entire, short lance-shaped, base 

 tapering. FLOWER : small, white, in dense clusters ; May, June. 

 Kentucky, Illinois ; low, thorny tree. 



145. Western Buckthorn. (Bumelia lanuginosa.) 

 LEAF: i>'-3', simple, alternate, entire, obovate, base wedge- 

 shaped, rusty- woolly beneath. FLOWER : small, white, 6-12- 

 clustered ; July. Illinois ; low, thorny tree. 



146. Honey-locust. Three-thorned Acacia. (Gleditschia 



triacanthos.) 



LEAF : 6'-8', pinnate and doubly pinnate, alternate ; leaflets, 

 10-24, i'-2' long (when once pinnate ; when twice pinnate, much 

 smaller, and very numerous), entire, or very obscurely serrate. 



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