The hanging red flowers of Lessertia frutescens look like shoes on this plant seen in September in the Ceres Karoo. The banner and keel petals are visible and large, the wings small, concealed inside the calyx.
The calyx is darker red than the corolla. Its lobes are angular and acutely pointed; its base rounded like a cup that could not stand in its saucer. The pedicel is positioned horizontally from the calyx, causing the flower to hang away from the stem, as far as its straight stalk allows.
Upper stems and leaf rachises are white velvety, as are the lower leaflet surfaces (Manning, 2009).