120 ROSACEA, (rose family.) 



lj'-2' long. Plum about ^' in diameter, thin-skinned and of an agreeable 

 flavor. 



^2. Cerasus. (Cherry.^ — Lh-upe not (jlaucous : stone r/Iobuhir or slight/// com- 

 pressed: leaves folded in the hud, deciduous. — Spineless shrubs or trees. 

 * Flowers clustered. 



4. P. Pennsylvanica, L. Leavesthin,ovate-lanccolate, acuminate, finely 

 and sharply sen-ate, green and smooth on both sides ; flowers several in a cluster, 

 on long peduncles ; drupe globose, light red — Rocky Avoods, North Carolina, 

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



* * Flowers in racemes terminating leafij branches. 



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

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

 presscd ; 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. Drupe 

 asti-ingent. 



§ 3. LAUROCERAStrs. ( Cherry -Laurel ) — Drupe not r/lawons: stone (/lobular: 

 Jlowers in racemes from the axils of evercjreen leaves. 



7. P. Caroliniana, Ait. (Mock Orange.) Leaves coriaceous, smooth 

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

 leaves, white ; drupe ovoid, soon dry, black. — Banks of rivers, Florida to North 

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



3. SPIIl.ffiA, L. Meadow-Sweet. 



Calvx .5-clcft, persistent. Petals 5, roundish, imbricated in the bud. Stamens 

 10-50. Follicles 3- 12, I -10-seedod. Styles terminal. — Slirubs or jierenniul 

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



dioecious. 



* Shrubs : Jlowers perfect. 



-1- Flowers cori/mbose. 



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



crenatc-servaic, smooth ; corymbs umbellate, terminating the short branches, 



mostly pubescent ; follicle smooth, inflated, 2-4-seeded. — Var. ferruginea, 



Nutt. Leaves smaller (T long), slightly lobed, covered, like the branches, 



corvmbs, 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. — Shnib 3° -5° liigh, the old bark separating m L..ia layers. 



Flowers white. 



-1- H- Flowers panicle J. 



2. S. tomentosa, L. Leaves simple, ovate or oblong, serrate, the lower 

 surface, like the branches and dose panicle, covered with a dense, rubt-colored 



