teretifolius is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia.

Flowering occurs from September to December and is followed by fruits which are woody capsules, 6.5–9 millimetres (0.3–0.4 in) long.

teretifolius was first formally described in 2010 by Alex George in Nuytsia from a specimen collected west of the Whicher Scarp.

teretifolius is found inland from Busselton[1] in the Jarrah Forest and Swan Coastal Plain biogeographic regions.

teretifolius is classified as "Priority Four" by the Western Australian Government Department of Parks and Wildlife[3] meaning that it is rare or near threatened.