Trianthema
 Trianthema is a genus of flowering plants in the ice plant family Aizoaceae. Members of the genus are annuals or perennials generally characterized by fleshy opposite unequal smooth-margined leaves a prostrate growth form flowers with five perianth segments subtended by a pair of bracts and a fruit with a winged lid. They are known commonly as horse purslanes.The contains about 20 described species growing in tropical and subtropical regions especially Australia.