94 LKGUMiNos^. (rnr.sE family.) 



to Mii5sissippi, and northward. May and June. — Shrub 6° -15° high. Leaf- 

 lets I'-l^' 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 I -seeded. (A. pumila, il/(c/iT, 

 A. pubescens, Willd. A. Caroliniana, Crooiii.) — Low pine bairens, 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. Hoarytomentose ; leaves sessile ; leaflets nu- 

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

 teeth acute, nearly equal; legume l-,5eeded. — Near Augusta, Georgia, and 

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



11. ROBIWIA, L. Locust. 



Calj'X short, 5-toothed or 5-cleft, the two upper teeth shorter and more or less 

 nnited. 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. Fseudacacia, L. {Locust. False Acacia.) Smoothish ; 

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

 elliptical ; racemes pendulous, oljlong, nLiny-flowcrcd ; flowers white ; legume 

 4 - C-seedod. — 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. viscosa. 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, both the ordinary form and the var. koska, 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, .E/?,)— 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. 



