Gwenneth J. Harden

Davidsonia jerseyana, also known as Davidson's plum or Mullumbimby plum, is a small, slender subtropical rainforest tree up to 10 metres (33 ft) high. The hairy leaves are compound and 35–60 cm (14–24 in) long, with 11–17 leaflets. It is endemic to a restricted area of northern New South Wales on the east coast of Australia. The tree's fruit emerge from the trunk, and superficially resemble the European plum. It is considered an endangered species. There are two other species of Davidson's plum.

Davidsonia johnsonii, commonly known as smooth Davidson's plum, is a small tree native to rainforests of eastern Australia. The leaves are compound, glossy and hairless. It is a rare tree in the wild, but it is cultivated for its edible fruit. The fruit is a deep burgundy colour, with a sour flavour and is popular in jams. It is cultivated in small plantations. Due to infertile seeds it can only be propagated from cuttings or division. Hence all cultivated material is derived from clones of wild plants. Plants take at least six years to produce fruit. Some selections are heavy bearing.