Small terrestrial to 25 cm tall. Leaf almost round, to 3 cm long, to 3 cm wide, held on the ground. Flowers 1-8, to 5 mm wide, purplish; winter to spring. Sepals similar in length, dorsal wider than laterals. Petals similar to sepals, spreading. Labellum oblong, pointed at tip. Syn. Acianthus reniformis (R. Br.) Schltr.

C. robusta D.L. Jones & M.A. Clem. is similar to C. reniformis but is a generally larger plant in all its parts.

SE Australia.

Source: Jeanes, J. (2005). Orchidaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.