It is a terrestrial orchid with a single narrow leaf and between 10 and 20 pale green or cream-coloured flowers with purplish markings.

Flowering occurs between September and November in Australia and in June China.

[2][3][4][5] The green corduroy orchid was first formally described in 1825 by David Don who gave it the name Bletium bicallosa and published the description in Prodromus Florae Nepalensis.

[6][7] In 1966, Peter Francis Hunt and Victor Summerhayes changed the name to Eulophia bicallosa.

It also occurs in Hainan province in China and in India, Indonesia, Malaysia, Myanmar, Nepal, Thailand and New Guinea.