MIMOSACEAE. 157 



mostly shorter than the petioles; leaflets obliquely obovate, 2-8 mm. long, ses- 

 sile, subeoriaceous, rounded at the apex, rather strongly few-veined, shining 

 above, dull beneath; peduncles 4-20 mm. long; heads few-several-flowered; 

 calyx 2 mm. long, sharply 5-toothed; corolla about 5 mm. long; stamens rose, 

 or pink, 2-3 times as long as the corolla; pod curved into a nearly or quite 

 complete circle, 6-12 cm. long, 5-8 mm. wide. 



Coppices and pine-lands, Andros, Xew Providence and Great Exuma : Cuba. 

 Bristlt Cat's-claw. 



6. Pithecolobium discolor Britton, Bull. Torr. Club 41: 4. 1914. 



A shrub, or a small tree up to 7 m. high, the young twigs and leaves densely 

 puberulent, the old leaves glabrous or somewhat puberulent, 1-2 dm. long; 

 petioles stout, 1-2 cm. long; pinnae 3 or 4 pairs, the glands on the rachis be- 

 tween them small and orbicular ; leaflets 3-6 pairs, obovate, chartaceous, 1.5-2.5 

 cm. long, dark green above, pale beneath, reticulate-veined, obtuse or retuse; 

 peduncles axillary, 5-11 cm. long; flowers short-racemose; pedicels puberulent; 

 calyx 4-5 mm. long, puberulent; corolla puberulent, 7-8 mm. long; stamens 

 1.5-2 em. long; pod coiled, 6-8 em. long, 8-10 mm. wide; seeds blue and 

 white, shining, orbicular, 4 mm. broad. 



Margin of coppice, Abaco at Old Kerr's Point, perhaps introduced : Cuba. 



2. ALBIZZIA Durazz. Mag. Tosc. 3*: 11. 1772. 



Unarmed trees, or some species shrubs, with bipinnate leaves and solitary 

 or panicled heads, umbels, or rarely spikes of small, mostly perfect flowers. 

 Calyx 5-toothed. Corolla funnelform, the petals united to about the middle 

 into a tube. Stamens numeious, united below, long-exserted ; anthers small; 

 pollen-grains agglomerate. Pod broadly linear, flat, thin, not pulpy within. 

 Seed^ suborbieular to oblong. [In honor of the Italian naturalist Albizzi.] 

 About 50 species, natives of the Old World. Type species: Albizzia Julibrissin 

 Durazzini. 



1. Albizzia Lebbeck (L.) Benth. Lond. Jour. Bot. 3: 87. 1844. 



Mimosa Lebbeclc L. Sp. PI. 516. 1753. 



Acacia Lebbeclc Willd. Sp. PI. 4: 1066. 1806. 



A tree, up to 15 m. high, often flowering when not over 5 m., the foliage 

 glabrous or sparingly puberulent. Leaves large, often 4 dm. long ; petioles 

 2-10 cm. long, bearing an oblong, sessile gland; pinnae 2-4 pairs; leaflets 4-9 

 pairs on each pinna, thin, nearly sessile, obliquely oblong or the terminal pair 

 obovate, obtuse, 2-4 cm. long, reticulate-veined; peduncles 4 3-10 cm. long; 

 umbels subglobose ; pedicels pubescent, 2-5 mm. long; calyx narrowly cam- 

 panulate, pubescent, about 4 mm. long, its teeth short ; corolla about 6 mm. 

 long; stamens yellowish, about 3 cm. long; pod straight, broadly linear, nar- 

 rowed at each end, 1.5-3 dm. long, 2-4 em. wide, glabrous, shining; seeds 

 about 1.5 cm. broad. 



Roadsides spontaneous after cultivation. New Providence near Nassau : 

 Widely planted and established in the Wesf Indies: native of tropical Asia and 

 Africa. WoMAx's-Toxr.rF. Tkek. Singee-teeb. 'Whistling bean. 



3. LYSILOMA Benth. Lond. Jour. Bot. 3: 82. 1844. 



Unarmed trees or shrubs, with slender branches, bipinnate leaves, the small 

 flowers in heads or spikes. Calyx eampamilate, 5-lobed. Corolla 5-lobod. 



