Biology:Olearia hookeri

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Short description: Species of flowering plant

Olearia hookeri
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Olearia
Species:
O. hookeri
Binomial name
Olearia hookeri
(Sond.) Benth.[1]
Synonyms[1]
  • Eurybia hookeri Sond.
  • Olearia hookeri (Sond.) Benth. var. hookeri

Olearia hookeri, commonly known as crimsontip daisybush,[2] is a species of flowering plant in the family Asteraceae and is endemic to Tasmania. It is a sticky shrub with small, narrowly linear leaves and white to bluish-purple and yellow, daisy-like inflorescences.

Description

Olearia hookeri is a sticky, glabrous shrub that typically grows to a height of up to 2 m (6 ft 7 in). Its leaves are narrowly linear, 3–5 mm (0.12–0.20 in) long. The heads or daisy-like "flowers" are arranged singly on the ends of branchlets and are 20–25 mm (0.79–0.98 in) in diameter. Each head has eight to ten white to bluish-purple ray florets surrounding a slightly larger number of yellow disc florets. Flowering occurs from September to December and the fruit is a short, hairy achene, the pappus with bristles of different lengths.[2][3][4]

Taxonomy

The species was formally described in 1853 by Otto Wilhelm Sonder who gave it the name Eurybia hookeri in Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde, based on plant material collected by Charles Stuart.[5][6] In 1867, George Bentham changed the name to Olearia hookeri in Flora Australiensis.[4][7]

Distribution and habitat

Olearia hookeri grows on dry hills near Hobart and in shrubby woodland on the south and central-east coasts of Tasmania.[2]

Conservation status

This daisy bush is listed as "rare" under the Tasmanian Government Threatened Species Protection Act 1995.[2]

References

  1. 1.0 1.1 "Olearia hookeri". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/104763. 
  2. 2.0 2.1 2.2 2.3 "Olearia hookeri". Tasmanian Government Department of Primary Industries, Parks, Water and the Environment. https://www.naturalvaluesatlas.tas.gov.au/downloadattachment?id=14221. 
  3. Jordan, Greg. "Olearia hookeri". University of Tasmania. https://www.utas.edu.au/dicotkey/dicotkey/AST/ast/sOlearia_hookeri.htm. 
  4. 4.0 4.1 Bentham, George (1867). Flora Australiensis. 3. London: Lovell Reeve & Co.. p. 483. https://www.biodiversitylibrary.org/item/41807#page/491/mode/1up. Retrieved 26 April 2022. 
  5. "Eurybia hookeri". APNI. https://id.biodiversity.org.au/instance/apni/25931. 
  6. Sonder, Otto W. (1853). "Plantae Muellerianae. Beitrag zur Flora Sudaustraliens, aus den Sammlungen des Dr. Ferd. Muller.". Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde 25: 463–464. https://www.biodiversitylibrary.org/item/109556#page/469/mode/1up. Retrieved 26 April 2022. 
  7. "Olearia hookeri". APNI. https://id.biodiversity.org.au/instance/apni/533905. 

Wikidata ☰ Q15588651 entry