Which genus contains more species, Brachystelma or Macleaya?
Brachystelma: The genus Brachystelma R. Br. Brachystelma:  (Apocynaceae: Asclepiadoideae - Ceropegieae) is represented by over a hundred species in the world, chiefly distributed in South Africa, South-East Asia and Australasia.
i don't know