Harveya capensis, in Afrikaans the witinkblom (white inkflower), is a slender perennial of the southern regions of the Western and Eastern Cape. It may reach heights of 40 cm. A slight pink tinge may be seen on the large, wavy, commonly white flower corollas that measure about 3 cm across. The flowers grow in loose racemes. Flowers have curved, funnel shapes with yellow throats resembling keyholes. The flower tube or funnel is narrowed on the sides and about 3 cm long.
The flowers are scented at night, suggesting moth or other nocturnal insect pollinators. Flowering happens in late spring and summer (Manning, 2007; Vlok and Schutte-Vlok, 2010).