It is an evergreen, terrestrial orchid with a fleshy stem, wavy leaves and many yellowish green flowers crowded on a green flowering stem.

The lateral sepals are a similar length, about 2.5 mm (0.1 in) wide and spread apart from each other.

[3][2][4] Crepidium fontinale was first formally described in 2006 by David Jones and Mark Clements from a specimen collected from the Black Jungle in the Northern Territory.

[1][5] The specific epithet (fontinale) is a Latin word meaning "of a spring",[6] referring to the preferred habitat of this orchid.

[3] The yellow spur orchid grows in moist areas, especially near springs in dense rainforest and is found in northern parts of the Northern Territory including Bathurst Island.