Olearia subspicata

Olearia subspicata
Near Hobartville, Queensland
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Olearia
Species:
O. subspicata
Binomial name
Olearia subspicata
Synonyms[1]
  • Aster mitchelli F.Muell. orth. var.
  • Aster mitchellii F.Muell.
  • Eurybia subspicata Hook.
  • Olearia sp. Bremer Bay (R.Davis 10528) WA Herbarium
  • Olearia subspicata F.Muell. nom. inval., pro syn.
Habit

Olearia subspicata, commonly known as spiked daisy bush[2] or shrubby daisy-bush,[3] is a species of flowering plant in the family Asteraceae and is endemic to continental Australia. It is an erect shrub with more or less linear leaves and white and yellow, daisy-like inflorescences.

Description

Olearia subspicata is an erect shrub that typically grows to a height of 0.5–3 m (1 ft 8 in – 9 ft 10 in)and has woody stems. The leaves are linear to narrowly elliptic, or narrowly egg-shaped or narrowly lance-shaped with the narrower end towards the base, 5–30 mm (0.20–1.18 in) long and 1–3 mm (0.039–0.118 in) wide and sessile. The edges of the leaves are rolled under, the upper surface is more or less glabrous and the lower surface, when visible, is woolly-hairy. The heads or daisy-like "flowers" are arranged singly or in panicles on the ends of branches or in leaf axils on a peduncle about 9 mm (0.35 in) long and are 14–20 mm (0.55–0.79 in) in diameter with a narrowly conical involucre at the base. Each head has up to 7, (usually 2 to 4) ray florets, the ligule 5–13 mm (0.20–0.51 in) long, surrounding 3 to 10 yellow disc florets. Flowering time varies with distribution and the fruit is an achene 1.5–2 mm (0.059–0.079 in) long, the pappus 5–8 mm (0.20–0.31 in) long with 40 to 50 white to straw-coloured bristles 5–6 mm (0.20–0.24 in) long.[2][3][4][5][6]

Taxonomy

This daisy was first formally described in 1845 by William Jackson Hooker who gave it the name Eurybia subspicata in Thomas Mitchell's Journal of an Expedition into the Interior of Tropical Australia.[7][8] In 1867 George Bentham changed the name to Olearia subspicata in Flora Australiensis.[9] The specific epithet (subspicata) means "almost spicate".[10]

Distribution and habitat

Spiked daisy bush grows in shrubland, mallee and mulga and is widely distributed in Western Australia, South Australia, the southern parts of the Northern Territory, western New South Wales, Queensland and the far north-west of Victoria.[2][3][4][5][6][11]

References

  1. ^ a b "Olearia subspicata". Australian Plant Census. Retrieved 8 August 2022.
  2. ^ a b c "Olearia subspicata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. ^ a b c "Olearia subspicata". State Herbarium of South Australia. Retrieved 8 August 2022.
  4. ^ a b "Olearia subspicata". Northern Territory Government. Retrieved 8 August 2022.
  5. ^ a b Walsh, Neville G.; Lander, Nicholas S. "Olearia subspicata". Royal Botanic Gardens Victoria. Retrieved 8 August 2022.
  6. ^ a b Lander, Nicholas S. "Olearia subspicata". Royal Botanic Garden Sydney. Retrieved 8 August 2022.
  7. ^ "Eurybia subspicata". APNI. Retrieved 8 August 2022.
  8. ^ Bentham, George (1848). Mitchell, Thomas (ed.). Journal of an Expedition into the Interior of Tropical Australia. p. 31. Retrieved 8 August 2022.
  9. ^ "Olearia subspicata". APNI. Retrieved 4 August 2022.
  10. ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 317. ISBN 9780958034180.
  11. ^ "Olearia subspicata". Atlas of Living Australia. Retrieved 8 August 2022.