94 LKGUMINOS^. (pulse FAMILY.) 



to Mississippi, and northward. May and June. — Shrnb 6°-15° high. Leaf- 

 lets 1 ' - 1 5' long. Ivacemes mostly panicled. 



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

 leaflets 15-35, rigid, oval or oblong, conspicnonsly 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. pnmila, Michx. 

 A. pubesccns, Wi/kl. 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. Iloary-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. ROBIIHA, L. Locust. 



Calyx short, 5-toothc(l or 5-ck'ft, 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-colorcd 

 flowers in axillary racemes. 



1. R. Pseudacacia, L. (Locust. F.\lse Acacia.) Smoothish ; 

 spines small on the oUkr br.anches, straight; leaflets 9-17, oblong-ovate, or 

 elliptical ; racemes j)endulous, oblong, many-flowcrcd ; flowers white ; legume 

 4-6-seeded. — Rich soil, in the upix?r 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. E.. visCOSa, Vent. Branches, petioles, peduncles, and legumes glandular- 

 viscid ; spines very small ; leaflets 11 -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 tiie mountains of Georgia and Carolina. May and June. 

 — A tree 20° -40° higli. 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. rosea, Pursh, with 

 pulwscent branches and few-flowered racemes. May. — Shrub 3° - 8° high. 



Var. EUiottii. 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. 



