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Published In: Species Plantarum 2: 751. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: A genus with more than 300 species, widely distributed in tropics and subtropics of both New and Old Worlds, with centre of distribution in Tropical Africa. In Pakistan it is represented by 24 species.

 

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Shrubs or herbs, generally pubescent, hairs medifixed appressed, sometimes mixed with basifixed hairs. Leaves pinnate or imparipinnate or palmately trifoliolate or unifoliolate or simple; leaflets entire; stipules present. Inflorescence an axillary raceme or spike or solitary axillary. Bract generally caducous, bracteoles absent. Calyx lobes or teeth subequal or lowermost longer. Vexillum sessile or clawed. Wing slightly cohering with the keel. Keel gibbous on each side and often spurred. Stamens 9+1, diadelphous, anthers uniform, apiculate. Ovary with numerous or 1 to 2 ovules, style glabrous, stigma capitate, often penicillate. Fruit linear or globose, terete, 4-3-seeded or compressed; septate between the seeds. Seeds globose to cylindric, truncate, compressed or quadrate.
 

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1.Leaves simple or unifoliolate
2.Leaves broadly ovate-cordate (fruit generally 2, rarely 1-seeded)
Indigofera cordifolia
2.Leaves not cordate
3.Fruit 1-seeded
Indigofera linifolia
3.Fruit 6-8-seeded
Indigofera oblongifolia
1.Leaves not simple or unifoliolate
4.Gland tipped hairs present
5.Fruit 10-12 or more seeded; seeds barrel-shaped, slightly quadrangular with plane ends
Indigofera colutea
5.Fruit 4-6 rarely 8-seeded, seeds more or less discoid with irregular depressions
Indigofera argentea
4.Gland tipped hairs not present
6.Inflorescence axis spinescent
Indigofera intricata
6.Inflorescence axis not spinescent
7.Leaflets alternate
8.Flowers in elongated racemes
Indigofera tinctoria
8.Flowers in axillary heads, sessile or short peduncled
9.Fruit 3-6-seeded
Indigofera sessiliflora
9.Fruit 1-3-seeded
10.Entire plant whitish hoary, fruit 1-seeded, almost circular
Indigofera nephrocarpa
10.Plant not whitish hoary, fruit 1-3-seeded, cylindrical
Indigofera linnaei
7.Leaflets opposite
11.Fruit flattened
12.Perennial; fruit 2-5-seeded
Indigofera arabica
12.Annual; fruit 5-9-seeded
Indigofera hochstetteri
11.Fruit not flattened
13.Leaflets 3 per leaf
14.Leaflets beset with brown glands on the abaxial side; fruit narrowly winged on both sides of the sutures
Indigofera trifoliata
14.Leaflets without glands, fruit not winged on either side of the sutures
15.Inflorescence axis less than 4.5 cm long
Indigofera trita L. f. var. trita
15.Inflorescence axis more than 4.5 cm long
Indigofera trita var. maffei
13.Leaflets more than 3 per leaf, leaf pinnate
16.Fruit hairy
17.Fruit tetragonal with stiff spreading hairs
Indigofera astragalina
17.Fruit not tetragonal
18.Inflorescence 3-6-flowered
Indigofera tenuifolia
18.Inflorescence more than 6-flowered
19.Fruit torulose, 1-6-seeded
20.Fruit c. 1-1.5 mm broad, leaf c, 2-3.5 cm long; Inflorescence c. 5 mm long
Indigofera sessiliflora
20.Fruit c. 3-3.5 mm broad, leaf 6-8 cm long; inflorescence c. 4 cm long
21.One seeded part of the fruit definitely globose, sutures less broad (fig. 13); the number of leaflets pre leaf up to 7, the length of the longest rachis up to 6 cm long
Indigofera articulata
21.One seeded part of the fruit not globose, sutures more broad than those of I. articulata (Fig. 13); the number of leaflets per leaf up to 11, the length of the longest rachis up to cm long
22.Leaflets glabrous adaxially
Indigofera caerulea Roxb. var. caerulea
22.Leaflets pilose on both sides
Indigofera caerulea var. occidentalis
19.Fruit not torulose, 10-12-seeded
23.Length of the vexillum 5 mm or less
Indigofera tinctoria
23.Length of the vexillum more than 5 mm
24.Plant smaller, leaflets 13-31 per leaf, c. 5-8 mm long; fruit c. 1.1-1.5 cm long
24.Plant large, shrubby, leaflets 9-17, c. 1.0-1.3 cm long; fruit c. 2.5-5.0 cm long
Indigofera heterantha var. gerardiana
16.Fruit glabrous
25.Inflorescence with sterile bracts at the base
Indigofera cassioides
25.Inflorescence without sterile bracts at the base
26.Bracts cymbiform at the base, erect, enclosing the flower before anthesis
27.Leaflets pubescent on both surfaces
Indigofera hebepetala Benth. ex Baker var. hebepetala
27.Leaflets glabrous adaxially
Indigofera hebepetala var. glabra
26.Bracts not cymbiform, erect, but not enclosing the flower
28.Flower shorter than the subtending bract
Indigofera atropurpurea
28.Flower longer than the subtending bract
29.Calyx teeth deltoid, not exceeding the cup
Indigofera hamiltonii
29.Calyx teeth lanceolate, exceeding the cup
Indigofera himalayensis
 
 
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