uk fr
Pl@ntNet
EPPO AESAF
Species Aeschynomene afraspera
Author Léonard
Family Fabaceae
Weed Type Broadleaf
General Habit Annual herb with erect bushy completely hairless, which is 1 to 2 m high.
Underground System Taproot.
Stem Large and hollow contains the spinal in its central part. Its surface is glabrous, punctuated with small warts, especially to its base.
Leaf The leaves are compound pinnate and alternate. The petiole thickened at base, measuring 10 to 15 mm long. Its base is surrounded by 2 stipules appendicle, 15 to 20 mm long and 3 mm wide, acute upper side elongated. The rachis measures 10 to 20 cm in length. It bears from 25 to 35 pairs of leaflets that measure from 10 to 20 mm long and 3-4 mm wide. They are smooth, rounded base asymmetrical and rounded or slightly emarginate.
Inflorescence The inflorescences are axillary, long 4 to 5 cm. Each flower is in the axils of foliaceous bracts. It measures 1 cm long. The calyx, 8 mm long, consists of two lobes glabrous. The corolla is composed of an upper petal or banner 10 mm long and wide, upright, yellow gold, two lateral petals or wings, short (5 mm) and a lower petal or keel, along 10 to 12 mm, rounded, pubescent, greenish color.
Fruit The fruit is a pod of 7 to 10 cm long and 7-8 mm wide, undulating in its lower part. It consists of 6 to 10 articles. Its surface is covered with small warts. It is black to purple when ripe.
Biology Annual plant that reproduces by seeds.
Ecology Along waters; humid or swampy places; floodplains, lagoons; often in water; 0-1050 m alt.
World Distribution Northeast Tropical Africa: Sudan; East Tropical Africa: Tanzania; Uganda; Burundi West-Central Tropical Africa: Cameroon; Central African Republic; Zaire West Tropical Africa: Burkina Faso; Cote D'Ivoire; Gambia; Ghana; Guinea; Guinea-Bissau; Liberia; Mali; Nigeria; Senegal; Sierra Leone; Togo
Local weediness Burkina-Faso: Rare and not abundant. Ivory-Cost: Rare and not abundant. Ghana: Frequent but not abundant. Nigeria: Rare but abondant when present. Senegal: Rare but abondant when present. Tanzania: Rare but abondant when present. Uganda: Rare but abondant when present.
Global control Management options: http://www.afroweeds.org/network/pg/file/read/1902/general-guidelines-for-weed-management-in-lowland-rice
Reference Berhaut, J. 1967. Flore du Sénégal. Clairafrique, Dakar, Sénégal. Hutchinson, J., Dalziel, J.M., Keay, R.W.J., Hepper, F.N. 1958. Flora of west tropical africa. The Whitefriars Press, London & Tonbridge, Great Britain. Johnson, D.E. 1997. Les adventices en riziculture en Afrique de l'Ouest. ADRAO/WARDA, Bouaké, Côte-d'Ivoire.
online databases KewGarden   Mobot   Ipni   Jstor   Gbif   EOL   Google Images  
aesaf_20111125_155514.JPG