BO ACERACEiE. (mAPLE FAMILY.) 



petals as long as the tubular calyx ; panicle oblong ; leaflets 5, varying from 

 lanceolate to oval, short-acuminate, finely serrate, smooth, or nearly so, on both 

 surfaces — Rich soil, Florida to North Carolina, and westward. March - May. 

 — A shrub, or in the upper districts, a small tree. Flowers red. 



3. ^. flava, Ait. Stamens included ; claws of the lateral petals longer 

 than the tubular-campanulate calyx ; panicle oblong, pubescent ; leaflets 5-7, 

 obovate-oblong, acuminate, finely serrate, pnbescent beneath. — Rich soil, in the 

 middle and upper districts of Georgia to North Carolina and northward, April 

 and May. — A shrub or small tree. Flowers pale yellow. JE. discolor, Pursh, 

 is a form of this species with more strongly seiTato leaflets, and flesh-colored 

 or dull purple flowers. 



4. ^. parviflora, Walt. Stamens 3 times as long as the corolla ; claws 

 of the nearly similar petals longer than the obconical calyx ; panicle racemose, 

 very long; leaflets 5 - 7, oval-obovate, tomentose beneath. (j& raacrostachya, 

 Michx.) — Upper districts of Georgia and South Carolina. April and May. — 

 Shrub 3° - 9° high. Flowers white. Stamens 6 or 7. 



Ordek 43. ACERACEiE. (Maple Family.) 



Trees or shrubs, with opposite palmateh' lobed or pinnate exstipulate 

 leaves, and regular mostly polygamous or dicecioas flowers, with an imbri- 

 cated aestivation. — • Calyx 4:-9-lobed. Petals as many as the lobes of the 

 calyx, or none. Stamens 4-12, inserted with the petals into a hypogy- 

 nous disk. Ovary 2-eelled, with 2 pendulous amphitropous ovules in each 

 cell, forming in fruit a double 2-seeded samara. Styles 2. Seeds with 

 little or no albumen. Embryo folded or spirally coiled. 



1. ACER, L. Maflk. 



Flowers polygamous. Petals usually 5-8, or none. Stamens 4 -12. — Leaves 

 simple, palmately lobed. Flowers clustered or racemose. 



* Flowers in terminal racemes, appearing after the leaves. 



1. A. Pennsylvanicum, L. (Striped Maple.) Racemes simple, 

 drooping ; flowers (15-25) large ; petals obovate ; leaves slightly cordate, with 

 3 acuminate finely serrate lobes ; samara large. (A. striatum. Lam.) — Banks 

 of mountain streams, Georgia and northward. May. — A shrub or small tree, 

 with striped bark. Flowers greenish. 



2. A. spicatum. Lam. (Mountain Maple.) Racemes compound, 

 erect ; flowers small, very numerous ; petals linear-spatulate ; leaves cordate, 

 3-lobed, coarsely seiTate ; samara small. — With the preceding. — Slirub 6°- 10° 

 high. Leaves pubescent beneath. 



* * Flowers on long and drooping umbellate or corymbose pedicels, developed from 

 lateral and terminal buds. 



3. A. saccharinum, Wang. (Sugar Maple ) Leaves cordate, with 

 3-5 acute or acuminate sinuate-toothed lobes, paler and slightly pubescent be- 



