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Habitat

A weed of waterways, floodplains, wetlands, drainage channels, native bushland, disturbed sites, waste areas, roadsides and overgrazed pastures in wetter tropical and sub-tropical environments.

Naturalised Distribution

A widespread species with a scattered distribution throughout northern and eastern Australia. It is most common in the coastal and sub-coastal parts of the Northern Territory and northern Queensland. Less common along the central and southern coasts of Queensland and also recorded in north-western Western Australia.

Also naturalised in tropical Africa, tropical Asia, Papua New Guinea, Mexico, south-eastern USA (i.e. Florida), the Caribbean and on several Pacific islands (i.e. the Cook Islands, Fiji, Guam, Palau, Tonga, Western Samoa and Hawaii).

Family

Caesalpiniaceae (Queensland, the ACT, Victoria, Tasmania, Western Australia and the Northern Territory)

Fabaceae: sub-family Caesalpinioideae (New South Wales)

Leguminosae (South Australia).