Leptomeria is a genus of roughly 17–20 species of flowering shrubs in the family Amphorogynaceae (order Santalales), endemic to Australia. They are commonly known as currant bushes. The genus was described by the Scottish botanist Robert Brown in his landmark 1810 work Prodromus florae Novae Hollandiae et insulae Van-Diemen, making it one of the earliest Australian plant genera formally described.
Plants are mostly glabrous shrubs with numerous slender, rigid — sometimes spine-tipped — branches bearing prominently striate branchlets with decurrent ridges. Leaves are reduced to scales or are well-developed, and may be persistent or caducous. The flowers are minute and bisexual, borne singly or in lateral spikes or racemes; each has five (rarely four) tepals and five stamens inserted at the base of the tepals, a prominently lobed disc, and an inferior ovary. The fruit is a fleshy or dry drupe, globose to ovoid, with the tepals persisting at the apex.
The genus is distributed across most Australian states and territories, including Queensland, New South Wales, Victoria, Tasmania, South Australia, and Western Australia. Several species, notably Leptomeria acida (native currant or sour currant bush), produce edible drupes that have been used in preserves.
Etymology
The genus name Leptomeria was coined by Robert Brown in 1810 in his Prodromus florae Novae Hollandiae et insulae Van-Diemen, the foundational flora of Australia. The name derives from Greek roots (leptos, slender, and meros, part), likely referring to the plant's characteristically slender, rigid branches.
Distribution
Leptomeria is entirely endemic to Australia, with species recorded across Queensland, New South Wales, Victoria, Tasmania, South Australia, and Western Australia. The genus comprises approximately 17–20 species (counts vary by authority), all confined to the Australian continent and Tasmania.
Cultural Uses
The fruit of certain Leptomeria species — particularly Leptomeria acida, the native or sour currant bush — is edible and has been used in preserves. The common name "currant bushes" reflects the small, berry-like drupes produced by many members of the genus.
Taxonomy Notes
Leptomeria is placed in the order Santalales. GBIF assigns it to the family Amphorogynaceae, while PlantNET (NSW Flora) and the ALA taxonomic revision (Lepschi 1999) treat it within Santalaceae; Amphorogynaceae is sometimes recognised as a separate family or as a subfamily within a broadly circumscribed Santalaceae. The genus was comprehensively revised by Lepschi (1999) in Australian Systematic Botany 12(1).
