It has violet-coloured flowers on the ends of its branches in late spring followed by smooth, cup-shaped fruits.

[2] The flowers are deep violet and occur in groups of 2 to 9 on the ends of the longer branches which grew in the previous year or short ones of the latest growth.

[2][3] The specific epithet (hadra) is from the Ancient Greek ἁδρός (hadrós) meaning "stout" or "strong".

[2][4] Eremaea hadra is found on the edge of the escarpment between the Arrowsmith and Hill River districts in the Avon Wheatbelt, Geraldton Sandplains and Swan Coastal Plain biogeographic regions.

[6] Eremaea hadra is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.