Dodonaea pinnata

Dodonaea pinnata
In the Australian National Botanic Gardens
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Sapindaceae
Genus:	Dodonaea
Species:	D. pinnata
Binomial name
Dodonaea pinnata Sm. [1]

Leaves and fruit

Dodonaea pinnata, commonly known as pinnate hop bush, ^[2] is a species of plant in the family Sapindaceae and is endemic to the Sydney region of New South Wales. It is a spreading, dioecious shrub with imparipinnate leaves with mostly 10 to 16 leaflets, flowers arranged singly with 4 or 5 sepals and 8 to 10 stamens, and 4-winged capsules with leathery wings.

Description

Dodonaea pinnata is a spreading, dioecious shrub that typically grows to a height of up to 1.5 m (4 ft 11 in). Its leaves are imparipinnate, 14–38 mm (0.55–1.50 in) long on a petiole 4.0–5.5 mm (0.16–0.22 in) long. There are usually ten to sixteen densely hairy, narrowly egg-shaped leaflets, sometimes with the narrower end towards the base, the edges rolled under. The flowers are arranged singly on a pedicel 3.5–3.6 mm (0.14–0.14 in) long, with four or five egg-shaped sepals, 1.6–4.5 mm (0.063–0.177 in) long and eight to ten stamens. The ovary is hairy and the fruit is a four-winged capsule, 14–21 mm (0.55–0.83 in) long and 15.5–18 mm (0.61–0.71 in) wide with leathery wings 3.5–6 mm (0.14–0.24 in) wide. ^{[2] [3]}

Taxonomy

Dodonaea pinnata was first formally described in 1809 by James Edward Smith in The Cyclopaedia . ^{[4] [5]} The specific epithet (pinnata) means 'pinnate', referring to the leaves. ^[6]

Distribution and habitat

This species of Dodonaea is restricted to the Hawkesbury and Nepean river systems near Sydney, where it grows in forest on soils derived from sandstone. ^{[2] [3]}

References

1. "Dodonaea pinnata". Australian Plant Census. Retrieved 31 May 2025.
2. West, Judith G. Busby, John R. (ed.). "Dodonaea pinnata". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 31 May 2025.
3. Wilson, Peter G.; Scott, James A. "Dodonaea pinnata". Royal Botanic Garden, Sydney. Retrieved 31 May 2025.
4. "Dodonaea pinnata". Australian Plant Name Index. Retrieved 31 May 2025.
5. Smith, James E. (1809). Rees, Abraham (ed.). The cyclopædia; or, Universal dictionary of arts, sciences, and literature. London: Longman, Hurst, Rees, Orme & Brown. p. 69. Retrieved 31 May 2025.
6. George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 278. ISBN   9780958034180.