94 LEGUMINOS^E. (PULSE FAMILY.) 



to Mississippi, and northward. May and June. Shrub 6 -15 high. Leaf- 

 lets !'-!' long. Racemes mostly panicled. 



2. A. herbacea, Walt. Pubescent or glabrous ; leaves short-petioled ; 

 leaflets 15-35, rigid, oval or oblong, conspicuously dotted; racemes spicate, sin- 

 gle or panicled ; calyx-teeth villous ; the two upper ones short and obtuse, the 

 lower more or less elongated and acute ; legume 1 -seeded. (A. pumila, Michx. 

 A. pubescens, Willd. A. Caroliniana, Crooin.) Low pine barrens, Florida to 

 North Carolina, and westward. June and July. Shrub 2 - 4 high, with pur- 

 ple branches. Leaflets smaller and more crowded than in No. 1. Flowers blue 

 or white. 



3. A. canescens, Nutt. Hoary-tomentose ; leaves sessile; leaflets nu- 

 merous, small, elliptical, crowded ; spikes short, panicled, dense-flowered ; calyx- 

 teeth acute, nearly equal; legume 1 -seeded. Near Augusta, Georgia, and 

 westward. July and August. Shrub 1 - 2 high. Flowers bright blue. 



11. ROBINIA, L. LOCUST. 



Calyx short, 5-toothed or 5-cleft, the two upper teeth shorter and more or less 

 united. Vexillum large, roundish ; keel obtuse. Stamens diadelphous (9 & 

 1). Style bearded on the side facing the vexillum. Legume compressed, many- 

 seeded, the seed-bearing suture margined. Seeds flat. Trees or shrubs, often 

 with stipular spines, unequally pinnate leaves, and showy white or rose-colored 

 flowers in axillary racemes. 



1. R. Pseudacacia, L. (LOCUST. FALSE ACACIA.) Smoothish ; 

 spines small on the older branches, straight; leaflets 9-17, oblong-ovate, or 

 elliptical ; racemes pendulous, oblong, many-flowered ; flowers white ; legume 

 4-6-seeded. Rich soil, in the upper districts. April and May. A tree 30- 

 60 high, with hard and durable wood. Racemes 3' -5' long. Calyx spotted. 

 Legume smooth. Flowers fragrant. 



2. R. viSGOSa, Vent. Branches, petioles, peduncles, and legumes glandular- 

 viscid ; spines very small ; leaflets 1 1 - 25, ovate and oblong, obtuse or slightly 

 cordate at the base, paler and pubescent beneath, tipped with a short bristle ; 

 flowers crowded in roundish erect racemes, rose-color ; legume 3 - 5-seeded. 

 Banks of streams, on the mountains of Georgia and Carolina. May and June. 

 A tree 20 - 40 high. Flowers inodorous. 



3. R. hispida, L. Branches, &c. more or less bristly ; stipules very slen- 

 der and bristle-like, deciduous ; leaflets 11-18, smooth, ovate or oblong-ovate, 

 rounded or slightly cordate at the base, tipped with a long bristle ; flowers large, 

 in a loose and mostly pendulous raceme, bright rose-color. Mountains of Geor- 

 gia and North Carolina, botli the ordinary form and the var. ROSEA, Pursh, with 

 pubescent branches and few-flowered racemes. May. Shrub 3 - 8 high. 



Var. Elliottii. Branches, &c. pubescent ; stipular spines very stout, spread- 

 ing or recurved. (R. hispida, var. rosea, Ell) Pine barrens in the central 

 parts of Georgia and southward. Shrub 3 -5 high, with thick and rigid 

 branches. A still smaller form, scarcely a foot high (var. nana, Ell), is found 

 at Columbia, South Carolina. 



