Robust epiphyte. Pseudobulbs compressed-ovoid, to 12 cm long. Leaves several, linear, to 60 cm long, to 4 cm wide, fleshy. Flowers 12-60, to 4 cm wide; spring to summer. Sepals and petals lanceolate to elliptic, similar, usually olive-green with purple markings but variable. Labellum minutely hairy, off-white with red or purple spots, callus green or cream. Considered difficult to grow.

Inland N Australia extending into NSW.

C. madidum Lindl. from Qld &NSW is a robust epiphyte or epilith with long pendent many flowered racemes of smallish flowers (to 4 cm wide) that are mostly olive-green in colour.

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.