Close observation brings interesting Brunsvigia bosmaniae characteristics and individual differences among the plants to light.
The ovaries behind the perianth buds and flowers in picture are quite green, a feature often absent from a developing inflorescence: the ovaries may be browner and quite dark.
Brunsvigia ovaries are inferior, meaning they grow below the points from which perianth segments and stamens arise. These green ones are still much smaller than the eventual size of the fruit capsules to come later but are already three-angled and winged, slightly club-shaped. The ovaries become from 12 mm to 15 mm long.
The fruits are heavily ribbed, from 3 cm to 5,5 cm long and about 2 cm wide (Duncan, et al, 2016; Manning, 2007; iNaturalist).