XXX. LEGUMINOSiE 
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or less enclosing the flower-buds, falling off as the flowers expand. 
Calyx small, bell-shaped ; teeth 5, nearly equal or the lowest longer. 
Petals soon falling off, except sometimes the standard ; keel 
straight, obtuse. Upper stamen free, others united ; anthers tipped 
with a minute point. Ovary sessile ; ovules usually many ; style 
glabrous, incurved ; stigma small, capitate, often minutely hairy. 
Pod cylindric or nearly so, straight or slightly curved, often de- 
flexed ; seeds 6-12, rarely only 2, separated by pith-like partitions. 
The indigo dye of commerce is chiefly obtained from I. tinctoria, doubt- 
fully wild in India. 
Leaflets 3. Flowers crowded in short, sessile racemes . 2. I. trifoliata. 
Leaflets 5 or more. 
Flowers in ovoid heads. Pod \ in., 2-seeded . . 1. I. enneaphylla. 
Flowers in racemes. Pod § in. or more, many-seeded. 
Bracts minute. 
Calyx-teeth bristle-like, much longer than the 
tube . . . . . . . . 3. I. hirsuta. 
Calyx-teeth triangular, not longer than the tube 4. I. Gerardiana. 
Bracts long, more or less enclosing the flower-buds. 
Leaflets 9-11, ovate or ovate-oblong, thinly hairy 
or glabrous. Pod glabrous. 
Bracts boat-shaped, abruptly narrowed in a 
long, tail-like point . . . . .6 . I. hebepetala. 
Bracts lanceolate, gradually narrowed to the 
point. 
Flowers very dark purple-red . . .5. 1 . atropurpurea. 
Flowers bright pink . . . . .7.1. pulchella. 
Leaflets 19-35, oblong, densely hairy or tomen- 
tose. Pod tomentose . . . . . 8 . I. Dosua. 
. Indigofera enneaphylla, Linn . ; FI. Br. Ind. ii. 94. Per- 
ennial, silvery pubescent ; stems numerous, tufted, procumbent, 
12-18 in., much branched. Leaves ^-1^ in. ; leaflets 7-11, usually 
alternate, obovate, in. Flowers very small, bright red, crowded 
in nearly sessile, ovoid heads |P|| in. long. Calyx-teeth long, 
bristle-like. Pod pubescent, about \ in. ; seeds 2. 
Throughout India, ascending to 4000 ft.; January-December. — Malay 
Islands, N. Australia. 
*2. Indigofera trifoliata, Linn . ; FI. Br. Ind. ii. 96. Perennial, 
pubescent or hairy ; branches numerous, long, spreading from 
the base, procumbent or ascending. Leaflets 3, sessile, oblong, 
\-l in., gland-dotted. Flowers small, red, crowded in short, sessile 
racemes. Calyx-teeth, long, bristle-like. Pod pubescent, about 
i in* 
Throughout India, ascending to 4000 ft. ; Jun e-December. — Asia to Tropical 
Australia. 
*3. Indigofera hirsuta, Linn. ; FI. Br. Ind. ii. 98. Annual or 
biennial, herbaceous, densely hairy ; stems 2-4 ft., erect. Leaves 
2-6 in. ; leaflets 5-11, opposite, obovate, 1-2 in. ; stipules long, 
bristle-like, fringed. Flowers small, red, crowded in slender, hairy 
