92 
LEGUMINOSjE. 
\_Gagnebina. 
jugate, close, firm, ligulate, in. long, sessile, deciduous. Spikes 1-3, 
peduncled in tlie axils of the leaves, 1-2 in. long. Petals whitish, -JL- 
in. long. Pod firm, 1-2 in. long, with a rigid persistent wing to each 
suture. Gr. axillaris, DC. loc. cit. 
Mauritius in woods of the Police, Bois Bouge, and Montagne Longue. Coin 
de.Mire, Horne ! Also Madagascar. 
* Mimosa pudica , Linn. ; DC. Prod. ii. 426, the well-known Sensitive 
plant, a native of America, now spread widely in the Old World, occurs 
occasionally as a weed in Mauritius, and is common in the Seychelles, 
in Mahe. It is a shrubby perennial, with branches armed with small 
prickles and spreading hairs, petioled digitate leaves, each with 3-4 
pinnae with 12-20 pairs of small close linear-oblong membranous leaf- 
lets, minute polygamous tetramerous flowers in small round peduncled 
heads, 10 free stamens, flat linear pods armed with copious spreading 
stramineous bristles, which split up into 4-5 one-seeded joints, like a 
Pesmodium, and fall away from the sutures. Sensitive. 
* Leucoena glauca , Benth. in Hook. Lond. Journ. iv. 416, (Acacia 
frondosa, glauca, biceps, and leucocephala, DC .), probably a native of 
America, but now diffused through the Old W orld,is common throughout 
Mauritius, the Seychelles, and Bodriguez. It is a low spineless 
tree with bipinnate leaves, with rachises ending in a bristle, 4-8- 
jugate pinnae, 10-15-jugate linear acute glaucous membranous leaf- 
lets deltoid at the base, minute pentamerous hermaphrodite flowers in 
dens£ peduncled round heads, 10 free much exserted stamens, and a 
flat flexible glabrous strap-shaped pod 4-6 inches long, with 15-20 
small seeds and a long stalk. Cassie blanc. V Acacie. 
24. -ACACIA, Willd. 
Flowers hermaphrodite or polygamous, usually pentamerous. Calyx 
campanulate or funnel-shaped, shortly toothed. Petals exserted, 
united towards the base. Stamens free, indefinite, much exserted ; 
anthers minute, not gland-crested. Ovary sessile or stalked, many- 
ovuled ; style filiform ; stigma minute, capitate. Pod ligulate or oblong, 
not articulated, usually compressed and dry, rarely turgid; sutures 
straight or wavy, not thickened. — Prickly or unarmed trees, the 
leaves bipinnate or often represented only by flattened petioles 
(phyllodia), the minute flowers in dense peduncled rounded heads. 
Distbib. Tropics and Australia. Species 430. 
Pod thick, with a fleshy mesocarp. 
Erect with spines in stipular pairs 1. A. Farnesiana. 
Climber with copious scattered spines, none stipular * A. concinna. 
Pod thin, flat, flexible. 
No spines ; petioles flattened into phyllodia, some 
only bearing leaves . . 2. A. heterophylla. 
Petioles terete ; spines in stipular pairs * A. eburnea. 
