Comesperma sphaerocarpum, commonly known as the Broom Milkwort, is an Australian plant in the Milkwort family. Inconspicuous unless in flower, it grows from 10 to 30 cm (4 to 12 in) high. The stems are ridged and usually leafless, and arise from the plant's woody base. The rarely seen leaves are at the base of the shoot. They are thick in texture, and measure 8 mm long by 2 mm wide. This plant first appeared in scientific literature in Plantae Preissianae in 1846, authored by the German botanist Joachim Steetz. In cultivation this plant prefers sunny situations in moist infertile soils.