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Description
A diffuse annual with two ovate-lanceolate pointed leaflets,
flowers distant in peduncled spikes, pod joints two to seven, roundish,
convex or reticulated on the sides; flowers yellow, concealed in the stipular
bracts (Grisebach, 1963). The chromosome number is 2n = 20.
Distribution
All tropical countries from New Mexico (United States) to Brazil,
the West Indies, Australia.
Characteristics
It is a native legume in the brigalow areas of Queensland,
Australia, but is not very productive. Downes (1966) tested it at Parada,
north Queensland (lat. 17°66'S, 480 m elevation, rainfall 900 mm) and
found it very poor in establishment vigour and vigour of growth in the
wet season. It did not recover from frost or fire.
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