Hypocalymma longifolium

Hypocalymma longifolium is a member of the family Myrtaceae endemic to Western Australia.

The open shrub typically grows to a height of 1.0 m. It blooms between August and September producing cream-white flowers.

It is found in a small area along the west coast in swamps or breakaways in the Mid West region of Western Australia centred around Northampton where it grows in sandy to clay soils.