Indigofera astragalina DC.

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Photo: Bart Wursten
Malilangwe Wildlife Reserve

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Synonyms:
Common names:	Silky indigo (English)
Frequency:
Status:	Native
Description:	Erect or spreading, often somewhat straggling annual herb, up to 1.5m tall. Stems covered with stiff brownish hairs. Leaves imparipinnate with 5-11 leaflets; leaflets up to 4 × 2.5 cm, hairy on both surfaces; petiole up to 2 cm long, hairy. Inflorescences axillary racemes with hairy peduncles up to 25 cm long. Flowers c. 1 cm long, pale pink, darker at the base of the standard. Pods somewhat 4-angled, 10-20 mm long and c. 3 mm wide, densely hairy.
Notes:
Derivation of specific name:
Habitat:	In sandy soils or rocky areas in dry deciduous woodland, along roadsides, lake margins and in cultivated fields.
Flowering time:
Worldwide distribution:	Widespread in tropical Africa, Madagascar, Asia, New-Guinea and Australia. Introduced in the West-Indies.
Botswana distribution:	N
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters:	Display spot characters for this species
Literature:	Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 161. Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 69. Drummond, R.B. (1972). A list of Rhodesian Legumes. Kirkia 8(2) Page 221. Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 130. (Includes a picture). Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 48. Schrire, B.D. (2012). Papilionoideae-Indigofereae Flora Zambesiaca 3(4) Pages 78 - 80. (Includes a picture). Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 67.

Other sources of information about Indigofera astragalina:

Our websites:

Flora of Caprivi: Indigofera astragalina
Flora of Malawi: Indigofera astragalina
Flora of Mozambique: Indigofera astragalina
Flora of Zambia: Indigofera astragalina
Flora of Zimbabwe: Indigofera astragalina

External websites:

African Plants: A Photo Guide (Senckenberg): Indigofera astragalina
African Plant Database: Indigofera astragalina
BHL (Biodiversity Heritage Library): Indigofera astragalina
EOL (Encyclopedia of Life): Indigofera astragalina
GBIF (Global Biodiversity Information Facility): Indigofera astragalina
Google: Web - Images - Scholar
iNaturalist: Indigofera astragalina
IPNI (International Plant Names Index): Indigofera astragalina
JSTOR Plant Science: Indigofera astragalina
Mansfeld World Database of Agricultural and Horticultural Crops: Indigofera astragalina
Plants of the World Online: Indigofera astragalina
Tropicos: Indigofera astragalina
Wikipedia: Indigofera astragalina