Ada aurantiaca Lindl.

Robust epiphytic or epilithic. Pseudobulbs to 10 cm long. Leaves 1 or 2, to 30 cm long, to 2.5 cm wide. Flowers 8-18, to 2.5 cm long, vivid orange or scarlet; winter to spring. Sepals and petals linear-lanceolate, not spreading. Labellum linear-lanceolate to oblanceolate, callus 2-ridged.


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.