Chinese-bur

Triumfetta rhomboidea, commonly known as diamond burbark or Chinese bur, is an erect subshrub or perennial herb in the family Malvaceae (formerly Tiliaceae), of pantropical distribution and uncertain origin but probably Old World tropical Asia, now widely naturalised as a weed throughout the tropics and subtropics, including Africa, Asia, the Americas, and northern Australia. The plant typically grows 0.5 to 2 metres tall with slender, branched stems clothed in stellate hairs. The leaves are alternate, simple, polymorphic, broadly ovate to rhombic or three-lobed, 3 to 10 centimetres long, with toothed margins and palmate venation, scabrous and stellate-hairy on both surfaces. Small yellow flowers about 6 to 8 millimetres across are borne in short axillary cymes; each flower has five petals, eight to fifteen stamens, and a hairy ovary. The fruit is a small globose schizocarp or capsule about 6 millimetres across, densely covered with hooked or barbed bristles that readily attach to fur and clothing for dispersal. The bark yields a coarse jute-like fibre.