Trees, Shrubs and Vines 
140. English Hawthorn. (Crategus oxyacantha.) 
LEAF: 1%'-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. (Crategus cordata.) 
LEAF: 3'-5', simple, alternate, serrate, often 3-5-lobed, tri- 
angular, or broad-ovate, base often a little cordate, thinnish, stem 
slender. FLOWER: white, clustered; June. FRuir: red, very 
small, Virginia and west ; low tree and shrub; thorny. 
142. Summer Thorn. Summer Haw. (Crategus flava.) 
LEAF : 3-5’, simpie, 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, %4’-24' 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: 1%'-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, 1'-2' long (when once pinnate; when twice pinnate, much 
smaller, and very numerous), entire, or very obscurely serrate. 
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