It is a ground orchid with a single, hairy leaf and one or two fawn-coloured flowers with thin red lines on the sepals and petals.

Caladenia echidnachila is a terrestrial, perennial, deciduous, herb with an underground tuber and which grows singly or in loose groups.

[2][3][4] One or two fawn to tawny yellow-coloured flowers, 70–110 mm (3–4 in) across, are borne on a thin, wiry, hairy spike 15–40 cm (6–20 in) high.

There are short, blunt teeth on the sides of the labellum, decreasing in size towards the front and four to six rows of dark red calli along its centre.

[2][3][4] Caladenia echidnachila was first formally described by William Nicholls in 1933 and the description was published in Papers and Proceedings of the Royal Society of Tasmania.