It is an erect and spreading shrub endemic to the south-west of Western Australia, common in moist areas and like most of the other members of its genus has bell shaped, star-like white flowers in the leaf axils.

Myoporum tetrandrum is a shrub sometimes growing to a height of 3 metres (10 ft) with young branches that are glabrous and rather flattened.

[5] Slender myoporum occurs in Western Australia in near-coastal areas between the Stirling Range and Israelite Bay[2] in the Esperance Plains, Jarrah Forest, Mallee and Warren biogeographic regions.

[2][7] Myoporum tetrandrum contains a high percentage (up to 0.5%) of sesquiterpene essential oil making the plant toxic to livestock which suffer liver damage.

[8] Slender myoporum is a hardy plant in well-drained soil in full sun and is most easily propagated from cuttings.