Psychotria capensis subsp. capensis green fruit

Lavish, rounded clusters of the Psychotria capensis subsp. capensis fruit on this tree are still in the early developmental stage, before their colour changes to yellow, red and sometimes black. The spherical to slightly ovoid fruits become 5 mm to 7 mm in diameter. 

Psychotria forms part of the Rubiaceae or coffee family, the family resemblance clear (Coates Palgrave, 2002; Van Wyk and Van Wyk, 1997; iNaturalist; Wikipedia).