Dodonaea triangularis, commonly known as triangle-leaved hopbush,[2] is a species of flowering plant in the family Sapindaceae and is endemic to eastern Australia. It is a dioecious shrub with simple, more or less sessile leaves with three teeth or lobes at the end, flowers in groups of three to six axillary cymes, each flower with four sepals, six to eight stamens, and three- or four-angled capsule with lobe-like appendages.
Dodonaea triangularis is a spreading, dioecious or rarely polygamodioecious shrub that typically grows to a height of up to 3m (9.8ft). Its leaves are simple, usually 12–35mm (0.47–1.38in) long and 6–30mm (0.24–1.18in) wide on a petiole1–3mm (0.039–0.118in) long, usually egg-shaped or lance-shaped with the narrower end towards the base, and usually with three teeth or lobes on the end. The flowers are arranged in axils in cymes of 3 to 6, sometimes on the ends of branches, each flower on a pedicel3.5–10mm (0.14–0.39in) long. The flowers usually have four lance-shaped sepals 1.2–3mm (0.047–0.118in) long and 6 to 8 stamens, and a ovary densely covered with soft hairs. The fruit is a three- or four-angled, more or less spherical or egg-shaped capsule, mostly 6–9mm (0.24–0.35in) long and 8.5–11.5mm (0.33–0.45in) wide, with leathery or crusty lobes 1–2mm (0.039–0.079in) wide.[2][3]
Taxonomy
Dodonaea triangularis was first formally described in 1848 by John Lindley in Thomas Mitchell'sJournal of an Expedition into the Interior of Tropical Australia.[4][5] The specific epithet (triangularis) means 'triangular'.[6]
Distribution and habitat
This species of Dodonaea occurs between the Townsville area of Queensland and far north-eastern New South Wales where it grows in forest or woodland in granitic and sandstone soils on the ranges. The is an apparent disjunct population in the Hunter region of New South Wales.[2][3]
1 2 3 West, Judith G. "Dodonaea triangularis". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 16 July 2025.
1 2 Wilson, Paul G.; Scott, James A. "Dodonaea triangularis". Royal Botanic Garden, Sydney. Retrieved 16 July 2025.
↑ George, Alex S.; Sharr, Francis A. (2023). Western Australian Plant Names and Their Meanings - A Glossary (fifthed.). Kardinya: Four Gables Press. p.338. ISBN9780645629538.
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