128 LEGUMIXOS.E. (PULSE FAMILY.) 



leaves, and small flowers in spikes or heads. Ours introduced, and sparingly 

 spontaneous around homesteads. 



1. A. filicina, Willd. Herbaceous, unarmed, hirsute; stem erect; 

 leaves bipinnate; leaflets 50-60, very small, oblong-liiiear ; stipules decidu- 

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

 few-seeded." Gainesville, Florida (Garber). From Mexico. 



2. A. Famesiana, Willd. (OPOPOXAX.) Shrubby, spiny, glabrous; 

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

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

 yellow, fragrant ; legume terete, torulose. From West Indies. 



3. A. Jlllibrissin, 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. 

 From Asia. 



4. A. glauca, Willd. Unarmed, glabrous; pinnae 4-5 pairs; leaflets 

 12- 15 pairs, linear, distant, acute, glaucous beneath ; heads single or by pairs 

 on axillary peduncles. From West Indies. 



5. A. latisiliqua, Willd. Unarmed, glabrous; pinnae 5 pairs ; leaflets 

 10 pairs, elliptical; heads pauicled; flowers white; legume flat, stipitate, 

 many-seeded. A shrub or small tree. From West Indies. 



52. DESMANTHUS, Willd. 



Flowers polygamous. Calyx 5-toothed. Corolla of 5 oblong-spatulate pet- 

 als, or tubular and 5-cleft. Stamens 5-10. Filaments of the lower flowers 

 sterile. Legume linear or oblong, continuous, 2-valved. Herbs or shrubs, 

 with abruptly bipinnate leaves, and heads or spikes of white flowers borne on 

 axillary peduncles. Leaves sensitive. 



1. D. depressus, Humb. & BonpL Stems slender, prostrate, shrubby 

 at the base ; pinnae 2 pairs ; leaflets oblong-linear, very obtuse, oblique and 

 almost truncate at the base; peduncles 2-4-flowered, the two upper flowers 

 (sometimes all) perfect; stamens 10; legume linear, many-seeded; seeds 

 angular, compressed. South Florida. Stems l-2 long. Legume 1'- 

 iy long. 



2. D. virgatus, Willd. Stem erect, rather rigid, smoothish, angled; 

 pinnae 1-7 pairs ; leaflets numerous, oblong-linear ; a rather large ovate gland 

 below the kwest pinnae ; heads few-flowered; stamens 10; legume straight, 

 linear, 10-30-seeded. South Florida. Stem l-2 high. 



3. D. brachylobus, Benth. Smooth; stem erect; pinnaj 6- 14 pairs, 

 each with a minute gland at the base ; leaflets numerous, linear ; heads glo- 

 bose; stamens 5 ; legumes oblong, curved, 4- 6-seeded. (Uarliugtonia, DC.) 

 Mississippi (Carpenter), 



4. D. luteus, Benth. Stems ascending, rough with short rigid hairs; 

 pinnae 4-5 pairs; leaflets numerous, linear-oblong, mucronate, fringed on the 

 margins, veiny beneath ; stipules ovate, acuminate ; peduncles longer than the 

 leaves, rough, minutely bracted ; heads oval or oblong, many-flowered, nod- 



