Emerus tetrapterus (Hochst. ex Baker) Kuntze
Sesbania tetraptera is an erect, annual or biennial herb growing 1- 4 metres tall[
The edible leaves are sometimes gathered from the wild and consumed locally.
Arica - Niger, Chad, Sudan, Ethiopia, Tanzania, Mozambique, S. Africa.
Temporarily flooded grassland; clayey black hollow with drying crack; clayey-sandy or sandy places; riverside pans; dry limestone; mixed and Colophospermum woodland; at elevations of 90 - 1,600 metres[
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Requires a sunny position. Plants can withstand seasonal inundation of the soil[
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
Leaves - cooked as a potherb[
All species in this genus have potential for use as soil-improving ground cover plants that can greatly reduce soil erosion[
Seed - it has a hard seedcoat and may benefit from scarification before sowing to speed up germination. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing.
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