TkKKS OF THK NoKTJIKRX L'XITKH StATKS 77 



rouiulod at tlic haso, very resinous when young. Self-prunes 

 the fruiting branchlcts. Xativc of Europe. N. H. and Mass, 

 to X. Y. and Ohio. 



riuiiis and .Ipricot. 



7. Pntiius ariiicniaca L. Apricot. A small round-topped 

 tree with reddish bark. Drupe nearly smooth, short stalked, 

 yellow, edible. Cultivated. 



S. Prunus americana Marsh. Wild Plum. A shrub 

 r.v small tree with stunted thorn-like branches and thick black 

 bark. Leaves ovate, or obovate sharply and often doubly 

 serrate, rounded at the base, slender-petioled. Drupe with 

 a tough skin, globose, red or yellowish, edible. Often used 

 as a stock on which to graft domestic plums. Wood hard, 

 reddish in color. X. Y.. to Mont., Fla.. Colo., and Ohio. 



!». Prunus nigra Ait. Canada Plum. A tree with thin 

 l)ark. Leaves oval, ovate, or obovate, long-acuminate, crenu- 

 late-serrate ; drupe oval, orange-red. thick-skinned, with little 

 or no bloom. Petals pink in age. Newf. to Man.. Mass. and 

 Wis. 



1(1. Prunus hortulana Bail. Wild-goo.sc Plum. A 

 small tree with spreading l)ranches and thin bark. Leaves 

 ovate-lanceolate to ovate, long-acuminate, closely glandular- 

 serrate. Drupe bright red and thin-skinned, edible. 111. to 

 Kan., Tenn., and Tex. 



11. Prunus angustifolia Marsh. Chickasaw Plum. A 

 small tree with thorn-like stunted branches. Leaves acute, 

 serrulate, often rounded at the base. Drupe globose, red, and 

 edible. In dry soil. X. J. to Ma., west to Rocky Mts. 



12. I'ntiius doiiicstica L. Connnon Garden Plum. A 

 small tree with al)out 100 cultivated varieties. Drupe of 

 various cobjrs, covered with a thick glaucous bloom. 



l.{. Prunus alleghaniensis Port. Alleghany Plum. A 

 low shrub or small tree, seldom thorny. Leaves acute or 

 acuminate, linely serrate, rounded at the base. Drupe pleas- 

 antly acid, ulobose-ovoid. with a consiiiou<ms bloom. Pemi. 



2S. Amygdalus I Peach. 



Irees or shrubs with alternate, simple, serrate, pinnately- 

 \eined leaves with 2-4 disk-like glands at the edge of the 



