ROSACEJ3. 619 



ACACIA, Necker. 



Flowers polygamous. Calyx 4 - 5-toothed. Petals 4-5, separate or united 

 in a tube. Stamens numerous, inserted on the base of the corolla. Legume 

 2-valved, many-seeded. Mostly trees or shrubs, with pinnately compound 

 leaves, and small flowers in spikes or heads. 



A. fllicina, Willd. Herbaceous, unarmed, hirsute ; stem erect ; leaves 

 bipinnate ; leaflets 50 - 60, very small, oblong-linear ; stipules deciduous ; 

 heads peduncled, axillary and terminal ; flowers white ; " legume flat, few- 

 seeded." Gains ville, Florida ( Garber). Stem simple, 2 -3 high. 



A. Parnesiana, Willd. (OPOPONAX.) Shrubby, spiny, glabrous ; pinnae 

 about 6 pairs ; leaflets 12 - 18 pairs, oblong-linear ; stipular spines long, 

 straight; heads globose, on axillary single or clustered peduncles; flowers 

 yellow, fragrant ; legume terete, torulose. Waste places. Introduced. 



A. Julibrissin, Willd. Arborescent, unarmed, glabrous; pinnae 8-12 

 pairs ; leaflets about 30 pairs, oblong, oblique ; heads in a terminal panicle ; 

 flowers flesh-color ; stamens long-exserted ; legume flat, oblong, few-seeded. 

 Roadsides. Introduced. 



LEUCJENA, Benth. . 



Calyx 5-toothed. Stamens 10; anthers ovoid-oblong. Legume stipitate, 

 broadly linear, flat, 2-valved ; seeds compressed, transverse to the valves. 

 Shrubs or trees. Leaves bipinnate. Flowers white, in globose heads. 



L. glauca, Benth. Unarmed, glabrous; pinnae 4- 5 pairs; leaflets 12- 

 15 pairs, linear, distant, acute, glaucous beneath ; heads single or by pairs 

 on axillary peduncles ; flowers white ; legume linear, flat. Keys of South 

 Florida (Curtiss).-A small tree. 



LYSILOMA, Benth. 



Flowers polygamous. Calyx 5-cleft. Corolla broadly funnel-shaped, the 

 lobes valvate. Stamens mostly 12-30, united at base, exserted; anthers 

 minute, globose. Ovary sessile or nearly so, many-ovuled. Legume linear, 

 nearly straight, compressed, the valves at maturity separating from the per- 

 sistent margin. Seeds compressed, transverse. Trees or shrubs. 



L. latisiliqua, Benth. Unarmed, glabrous ; pinnae 5 pairs ; leaflets 10 

 pairs, elliptical ; heads panicled ; flowers white ; legume flat, strap-shaped, 

 stipitate, many-seeded. South Florida ( Garber, Curtiss). A shrub or 

 small tree. Legume 6' long. 



ORDER ROSACE^E. 



SPIRSJA, L. 



S. COrymbosa, Raf. Leaves undivided, ovate, unequally serrate near 

 the tip, whitish beneath ; corymb large, smooth, compound ; flowers white ; 

 follicle smooth. Mountains of North Carolina and Georgia. June. Shrub 

 1 - 2 high. Leaves 2' - 3' long. 



