Androstachys johnsonii, the Lebombo ironwood, is a tree species and the sole member of the genus Androstachys in the Picrodendraceae. It is native to Africa and Madagascar. Within southern Africa, it occurs in Limpopo Province, Mpumalanga and Swaziland. It is widely used in the Southern part of Mozambique, where it is known as Simbirre, for flooring and is commonly traded for pillars of huts and fences. South African tourist operators in Mozambique used it extensively for building structures near or in sea water.