The cream to whitish flowers of Wiborgia tetraptera grow in short racemes. They may also be pale greenish and sometimes flushed purple. The dull, yellowish brown calyx is two-lipped, its lobes acutely pointed.
The wing petals are as long as the keel that curves up at its tip. The round-tipped banner has a fold or pleat down its centre and is strongly reflexed away from the rest of the corolla.
The flat, disc-shaped fruit has small wings protruding from its centre. Flowering happens in spring. This plant was photographed in the Gifberg in spring (Manning and Goldblatt, 1997; Bond and Goldblatt, 1984; iNaturalist).