creeping chaffweed

Alternanthera pungens Kunth is a creeping, prostrate perennial pioneer plant of the Amaranthaceae family, spreading by seed and vegetatively, with roots often developing at the nodes of spreading stems. A plant of roadsides, path verges and waste places (ruderal), it is thought to have come from Central and South America, and to have become widely established in Australia and Southern Africa. Other species of this genus, e.g. Alternanthera sessilis (L.) R.Br. ex DC., have long been...