80 ACERACE^E. (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. Marcli - May. 

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



3. JE. 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, pubescent 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 serrate leaflets, and flesh-colored 

 or dull purple flowers. 



4. JE. 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. (M. macrostachya, 

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

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



ORDER 43. ACERACE^E. (MAPLE FAMILY.) 



Trees or shrubs, with opposite palmately lobed or pinnate exstipulate 

 leaves, and regular mostly polygamous or dioecious 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-celled, 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. MAPLK. 



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.) Batiks 

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

 with striped bark. Flowers greenish. 



2i A. spicatum, Lam. (MOUNTAIN MAPLE.) Racemes compound, 

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

 3-lobed, coarsely serrate ; samara small. With the preceding. Shrub 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- 



