Diascia cordata, the heart-leaved twinspur, is a straggling perennial reaching about 60 cm in height.
The ovate leaves on short petioles have sharply toothed margins and rigid tips. Leaf dimensions are up to 3 cm long and 2 cm wide.
In this photo the face of the corolla is at the top, the outcurving spurs below and a couple of bent-back sepal lobes in the centre. There is faint hairiness on the outside of the corolla. The long, dark red brown pedicel is sparsely white-stubbly. There is one pointed, stem-clasping bract visible on the stem way below the flower, maybe more further down.
The species grows in western KwaZulu-Natal, eastern Free State and Lesotho.
The habitat is along stream banks and in damp spots of Drakensberg grassland. The habitat population is considered of least concern early in the twenty first century (Manning, 2009; Pooley, 1998; iNaturalist; Wikipedia; http://redlist.sanbi.org).