120 ROSACKJF.. (ROSI. FAMILY.) 



l£'-2' long. Plum about i' in diameter, thin-skinned and of an agreeable 

 flavor. 



§ 2. Cerasus. (Cherry.} — Drupe not glaucous : stone globular or slightly com- 

 pressed: leaves folded in the bud, deciduous. — Sjiintless shrubs or trees. 

 * F/owers clustered. 



4. P. Pennsylvanica, L. Leaves thin, ovate-lanceolate, acuminate, firwlj 

 and sharply serrate, green and smooth on both sides ; flowers several in a duster, 

 on long peduncles ; drape globose, li<_dit red. — Rocky woods, North* Carolina, 

 and northward. May. — A small tree. Fruit small and sour. 



* * Floicers in racemes terminating hafy branches. 



5. P. serotina, Ehrhart. Leaves smooth, varying from oval to ovntc- 

 lanceolate, mostly acute or acuminate, serrate, with the teeth callous and ap- 

 pressed; racemes long, spreading; drupe globose, purplish-black. — Woods, 

 Florida to Mississippi, and northward. April and May. — A tree 20° - 60° high. 



6. P. Virginiana, L. Smooth throughout, or the lower surface of the 

 leaves, branches, and racemes more or less pubescent ; leaves thin, oval, oblong 

 or obovate, finely and sharply serrate, abruptly acute or acuminate ; racemes 

 rather short and erect ; drupe red. (P. hirsuta, Ell. ?) — Light sandy soil, Geor- 

 gia and northward. April. — Shrub 3°-9° high. Leaves 1'- 3' long. Drape 

 astringent. 



§ 3. Laurocerasts. (Cherry-Laurel ) — T)ruj>c not glaucous : stone globular: 

 flowers in racemes from the arils of < r< rgn < » l avt 9. 

 ". P. Caroliniana, Ait. (Moo* Orange.) Leaves coriaceous, smooth 

 and glossy, ovate-lanceolate, acute, mostly entire ; racemes shorter than the 

 leaves, white ; drupe ovoid, soon dry, black. — Banks of river-, Florida to Nor h 

 Carolina, and westward. February and March. — A small tree. 



3. SPIKJEA, L. Meadow-Sweet. 



Calyx 5-cleft, persistent.' Petals 5, roundish, imbricated in the bud. Stamens 



10-50. Follicles 3-12, l-10-seeded. Styles terminal. — Shrubs or perennial 



herbs, with simple or compound leaves. Rowers white or rose-color, sometimes 



dioecious. 



* Shrubs: flowers perfect. 



+- Flowers corymbose. 



1. S. opulifolia, L. Leaves broadly ovate or cordate, 3-lohcd, doubly 



crenate-serrate, smooth; corymbs umbellate, terminating the Bhort branches, 



mostly pubescent ; follicle smooth, inflated, 2-4-eeeded. — Var. rBaeuarm \, 



.Xiitt. Leaves Bmallor (l' long), Blightly tobed, covered, like me branches, 



corymbs, and follicles, with a dense brownish pubescence. — Banks of streams, 



Florida and Alabama (the variety) to the mountains of Georgia, and northward. 



April and May. — Shrub 8°-5° high, the old bark separating m una layer*. 



Flowers white. 



h- -.- Flowers panicled, 



2. S. tomontosa, L. Leaves simple, ovate o» oblong, npntrte, the lower 



surface, like the bnanokei and cJoM panicle, covered with a den-e, nUt-OOlored 



