Plants in the genus Tremandra are shrubs to 0.1–2 m (3.9 in – 6 ft 6.7 in) high with small to medium sized leaves arranged in opposite pairs and on a petiole.

The leaves are simple, flat, heart or egg-shaped and may be rounded at the base.

The single flowers are borne on a thread-like peduncle in leaf axils with 5 small to medium sized bracts.

The fruit are a hairy capsule 2–7 mm (0.079–0.276 in) long containing 2 seeds that are dispersed at maturity.

[2] The genus Tremandra was first formally described in 1824 by Augustin Pyramus de Candolle from an unpublished description by Robert Brown and de Candolle's description was published in Prodromus Systematis Naturalis Regni Vegetabilis.