Nemesia cheiranthus, the long-eared nemesia, is a slender annual herb that grows to 40 cm on sandy slopes and flats in Namaqualand and south to Piketberg. The leaves, mostly basal, are elliptic or lance-shaped and toothed. The flowers grow in loose racemes. The upper lip of the flower consists of four white long narrow petal lobes, sometimes marked with mauve at the base. The broad, bulging, yellow lower lip has two raised, velvety crests near its base. It also has a pointed, straight and short spur below.
Flowering happens at winter’s end and early spring (Manning, 2009; Manning and Goldblatt, 1997).