branches from the base, sending up many arching stems which have small, ovate leaves on the lower half and whorled flower clusters along the top half, together with a few smaller, bract-like leaves. Stems, leaves and calyces have a short, fine hair covering. Leaves may have reddish/purple edges and veins.
Flowers are formed of a purple, five pointed calyx, for which the upper three points are partly fused, while the lower two are free, and slightly longer. Conversely, the pink/purple corolla has a two-lobed upper lip and a three-lobed lower lip, of which the middle lobe is the longest. The lower lip has a white patch at the center, and is somewhat curved back, especially the middle lobe. The length of the lower lip is less than the width.