Brachystelma macropetalum is an erect perennial bearing green, long-lobed, spidery flowers. The corolla lobes do not join at the top as they do in the case of several other brachystelmas. It is these lobes or petals that earned the plant the specific name of macropetalum, large petals.
B. macropetalum grows in eastern Mpumalanga and Limpopo and beyond the South African border.
Its habitat is damp, mountainous parts and rocky woodland. The habitat population is deemed of least concern early in the twenty first century (Onderstall, 1996; http://redlist.sanbi.org).