Triumfetta rhomboidea

Triumfetta rhomboidea, commonly known as diamond burbark or Chinese bur, is a shrub that is extensively naturalised in tropical regions.It is thought that to have come to Australia from China. Its bark—sometimes called burbark--makes a kind of jute. The taxon was first formally described in 1760 by botanist Nikolaus von Jacquin. Various sources give the number of stamens as being between 8 and 15.The fruit is round to slightly ovoid and about 6 millimetres (0.2 in) in diameter with smooth spines which are about 2 millimetres (0.1 in) long.The stems are covered in star-shaped (stellate) hairs.Its embryology was described by Venkata Rao in 1952.