From behind, the flower of Diascia maculata in picture shows three of the five calyx lobes, reflexed by the bulging of the corolla base. The sepals taper to acutely pointed tips and each has a central groove down its flat blade.

The pair of triangularly tapering pouches (rather than spurs) on the corolla are prominent when viewing the back end of the flower. Similar to the inside, the corolla is dark at the base on the outside and on the pouches, pale in the lobed parts of the petals.

Irregular yellow markings in the dark part of the corolla have jagged points, similar to the border between the two contrasting corolla colours.

Short hairs are scattered sparsely on the outside of the corolla, the calyx and the pedicel (Vlok and Schutte-Vlok, 2015; Manning and Goldblatt, 2007; iNaturalist).