110 ELEMENTS OP BOTANY. 



exocarp fleshy, velvety, eiidocarp hard and bony, compressed, 

 deeply furrowed and pitted. 



A. Persica L. Peach. A tree with a rounded top; bark nearly 

 smooth ; leaves lanceolate, acuminate, finely serrate, smooth on both 

 sides ; petioles usually bearing 2 or 4 crescent-shaped or cup-shaped 

 glands ; flowers pink, scaly-bracted ; drupe ovoid, with a suture along- 

 one side. February-March. Often escaped from cultivation. 



III. CHRYSOBALANUS. 



Low shrubs ; leaves nearly sessile, entire ; stipules minute ; 

 flowers in terminal and axillary cymes or panicles, small; 

 calyx 5-cleft, persistent ; petals 5 ; stamens numerous ; pistil 

 1, ovary with 2 ovules of which only 1 matures ; fruit a 

 drupe. 



C. OBLONGiFOLius Michx. 1100 Plttm. Bush low and straggling, 

 seldom more than 1 ft. in height, unarmed ; leaves coriaceous, nar- 

 rowly ol)ovate or cuneiform, mucronate, smooth on both sides or 

 pubescent beneath, 3-4 in. long ; cymes mostly terminal, many- 

 flowered, but most of the flowers abortive, greenish-yellow ; calyx 

 pubescent ; ovary smooth ; drupe ovoid, nearly white, 1 in. or more 

 in length, edible, stone grooved on one side. April-]Ma3^ Dry 

 sandy barrens. 



.5.f). MIMOSACEiE. MIMOSA FAMILY. 



Herbs, shrubs or trees ; leaves alternate, pinnate, some- 

 times 2-3 times pinnately compound; stipules small ; flowers 

 in long-peduncled heads or racemes, regular, hypogynous ; 

 petals 3-6, distinct or slightly united ; stamens as many as 

 the petals or more numerous, distinct or united ; pistil 1, 

 ovary 1-celled, ovules several ; fruit a legume. 



I. ACUAN. 



Shrubs or perennial herbs; stems erect or diffuse, smooth; 

 leaves abruptly twice-pinnate ; stipules small ; flowers in 

 heads or spikes on axillary peduncles, the upper perfect, the 

 lower often staminate or neutral ; calyx 5-toothed ; corolla of 



