656 
XLVII. LEGUMINOS^. 
[Mimosa. 
(1) M. pudica Linn . Sp. PI. 518; Prain, l.c. 247. 
Low under-shrub up to 2 ft. tall, prickly and bristly. Leaves 
very sensitive of 4 digitate pinnae, sessile on a 2-in. petiole; pinnae 
2 to 3 in. long; leaflets 12 to 20 pairs bristly beneath. Heads in 
pairs, axillary, rose pink, ‘35 in. long; peduncles 1 in. long. 
Stamens 4. Pods *6 to 1 in. long, ‘2 in. across, of 3 to 5 joints, 
sutures persistent, bristly. The sensitive plant. Native name : 
Samalu. Hab. Abundant all over the peninsula. Introduced from 
America in the 16th century. 
(2) M. sepiaria Benth. Hook. Journ. Bot. iv. 595; Prain, lx. 
247. 
A thorny shrub. Stem about 4 ft. tall and 6 in. through; 
branches long, erect. Leaves, rachis downy, 2 in. long; pinnae 
6- to 8-paired, not sensitive, 1*5 in. long, pubescent above; leaflets 
12 to 20 pairs, coriaceous, ligulate, *2 to *3 in. long, -i to *15 in. 
wide, tip sub-acute, base oblique, truncate, sessile. Panicles 6 to 
8 in. long, of heads *25 in. through; rachis puberulous; peduncles 
‘5 1 ° ‘75 in. long. Corolla ’05 in. long, white. Stamens 8 to 10. Pod 
black, straight, i'5 to 2 in. long, -25 in. wide, joints 6 to 8, sutures 
unarmed. Hab. Damp ground. Singapore, chiefly at Tanglin. 
An escape from cultivation. Disirib. Also an escape in China and 
Borneo. Use : As a hedge plant and firewood. 
63 . ACACIA, Willd. 
Spiny or thorny trees or shrubs, erect or climbing. Leaves 
bipinnate; leaflets narrow, very small. Flowers in globose heads 
or spikes. Calyx campanulate or funnel-shaped, short-toothed. 
Petals exsert, united in lower half. Stamens free, exsert; anthers 
not gland-crested. Ovary stalked or not; style filiform; stigma 
minute. Pod ligulate or oblong, not jointed, dehiscent or not, 
rarely sub-cylindric. Species 430, cosmopolitan, mostly Australian. 
Erect shrubs, thorny. 
Pods cylindric, fleshy; flowers orange . . (1) A. Farnesiana 
Climbing shrubs, thorny. 
Pods flat; flowers white. 
Flower-heads -4 in. long; leaves narrow oblong (2) A. pseudo-intsia 
Flower-heads -2 in. across; leaflets linear. . (3) A. pennata 
(1) A. Farnesiana Willd. Sp. PI. iv: 1083; Prain, l.c. 248. 
A thorny shrub. Leaves bipinnate; rachis downy, 1 to 1*5 in. 
long; pinnae 6 to 16, from 1 to 1*5 in. long; leaflets 10 to 20 pairs, 
green coriaceous, linear-oblong, ‘25 in. long, '05 in. wide. Stipules 
forming white thorns 1 in. long. Capitula *35 in. through, orange 
yellow, fragrant. Pod thick, cylindric, 2 to 3 in. long, *5 in. thick, 
pulpy, dark brown or black. Seeds 12 to 18, ovate. Hab. Sandy 
open places, probably introduced. Pahang near Pekan. Selangor, 
Kwala Selangor near the fort. Penang (Porter, Wall. Cat. 5264F). 
