Olearia quercifolia, commonly known as oak-leaved olearia,[2] is a species of flowering plant in the family Asteraceae, and is endemic to the Blue Mountains in New South Wales. It is a shrub with elliptic to egg-shaped leaves with the narrower end towards the base, and white and yellow daisy flowers.

Olearia quercifolia
In the Australian National Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Olearia
Species:
O. quercifolia
Binomial name
Olearia quercifolia
Synonyms[1]
  • Aster cuneatus Steud. nom. inval., pro syn.
  • Aster quercifolius DC. nom. inval., pro syn.
  • Aster sinuatus A.Cunn. nom. inval., pro syn.
  • Olearia stellulata f. quercifolia (Sieber ex DC.) Siebert & Voss
  • Olearia stellulata var. quercifolia (Sieber ex DC.) Benth.

Description

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Olearia quercifolia is a shrub that typically grows to a height of 2 m (6 ft 7 in). It has scattered elliptic to egg-shaped leaves with the narrower end towards the base arranged alternately along the stems, the leaves 10–50 mm (0.39–1.97 in) long and 7–25 mm (0.28–0.98 in) wide on a petiole up to 7 mm (0.28 in) long. The edges of the leaves are lobed and the lower surface is covered with yellow, woolly hairs. The heads or daisy-like "flowers" are arranged in leaf axils on a peduncle up to 50 mm (2.0 in) long, each head 21–30 mm (0.83–1.18 in) in diameter with 7 to 15 white ray florets and 18 to 29 yellow disc florets. Flowering occurs from July to December and the achenes are glabrous, the pappus with 27 to 42 long bristles.[2]

Taxonomy and naming

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Olearia quercifolia was first formally described in 1836 by Augustin Pyramus de Candolle in his Prodromus Systematis Naturalis Regni Vegetabilis, from an unpublished description of specimens collected by Allan Cunningham.[3][4] The specific epithet (quercifolia) means "oak-leaved".[5]

Distribution and habitat

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Oak-leaved olearia grows in swampy places in the Blue Mountains of eastern New South Wales.[2]

References

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  1. ^ a b "Olearia quercifolia". Australian Plant Census. Retrieved 7 July 2022.
  2. ^ a b c Lander, Nicholas S. "Oleari quercifolia". Royal Botanic Garden Sydney. Retrieved 7 July 2022.
  3. ^ "Olearia quercifolia". APNI. Retrieved 7 July 2022.
  4. ^ de Candolle, Augustin P.; de Candolle, Alphonse (1836). Prodromus systematis naturalis regni vegetabilis. Vol. 5. Paris. p. 272. Retrieved 7 July 2022.
  5. ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 290. ISBN 9780958034180.