Phaseolaster elliptica
| Sticky daisy bush | |
|---|---|
| Olearia elliptica in the Oxley Wild Rivers National Park | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Phaseolaster |
| Species: | P. elliptica
|
| Binomial name | |
| Phaseolaster elliptica | |
| Synonyms[1] | |
| |
Phaseolaster elliptica, commonly known as the sticky daisy bush,[2] is a shrub in the family Asteraceae and is native to New South Wales and Queensland in eastern Australia. It has scattered, sticky leaves and white flowers in summer and autumn.
Description
Phaseolaster elliptica is a shrub that typically grows to a height of 2 m (6 ft 7 in) and has scattered, curved, elliptic leaves 20–115 mm (0.79–4.53 in) long, 5–38 mm (0.20–1.50 in) wide on a petiole up to 12 mm (0.47 in) long. The upper surface of the leaves is sticky and the lower surface is a paler green. The heads or daisy-like "flowers" are arranged in loose groups on the ends of branches on a peduncle up to 12 mm (0.47 in) long and are 11–26 mm (0.43–1.02 in) wide. Each head has 8 to 23 white ray florets surrounding 8 to 30 yellow disc florets. Flowering occurs between November and May and the fruit are bristly achenes.[2]
Taxonomy and naming
The species was first formally described as Olearia elliptica by Augustin Pyramus de Candolle in 1836, who published the description in his 17-volume treatise, Prodromus Systematis Naturalis Regni Vegetabilis.[3][4] The specific epithet (elliptica) is a Latin word meaning "a defective circle" or "an ellipse".[5]
In 1993, Peter Shaw Green described two subspecies of O. elliptica that were accepted by the Australian Plant Census: O. elliptica subsp. elliptica in eastern Australia and O. elliptica subsp. praetermissa, which is endemic to Lord Howe Island.[6] In 2020 Guy L. Nesom placed the species in the newly-described genus Phaseolaster as P. elliptica after Olearia had been found to be polyphyletic, and raised subsp. praetermissa to a full species as P. praetermissa.[7]
Distribution and habitat
The species occurs from Berry northwards along central and eastern New South Wales to the Queensland border.[2] It is found in areas of annual rainfall of over 900 mm in the Sydney Basin.[8]
Use in horticulture
Sticky daisy bush adapts readily to cultivation, preferring acidic soils in part shade or sun.[9]
References
- ^ "Phaseolaster elliptica (DC.) G.L.Nesom". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 3 March 2026.
- ^ a b c Lander, Nicholas Sèan. "Olearia elliptica". Royal Botanic Garden Sydney. Retrieved 14 April 2019.
- ^ "Olearia elliptica". APNI. Retrieved 14 April 2019.
- ^ de Candolle, Augustin Pyramus (1836). Prodromus Systematis Naturalis Regni Vegetabilis (Volume 5). Paris: Sumptibus Sociorum Treuttel et Würtz. p. 271. Retrieved 14 April 2019.
- ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 346.
- ^ Green, Peter Shaw (1993). "Notes Relating to the Floras of Norfolk & Lord Howe Islands, IV". Kew Bulletin. 48 (2): 311–312. doi:10.2307/4117938. JSTOR 4117938.
- ^ Nesom, G.L. 2020. New genera from Australian Olearia (Asteraceae: Astereae). Phytoneuron 2020-65: 1–94. Published 19 August 2020. ISSN 2153-733X
- ^ Benson, Doug; McDougall, Lyn (1994). "Ecology of Sydney Plant Species Part 2: Dicotyledon families Asteraceae to Buddlejaceae". Cunninghamia. 3 (4): 895.
- ^ Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1997). Encyclopaedia of Australian Plants Suitable for Cultivation:Volume 7 – N-Po. Port Melbourne: Lothian Press. pp. 74–75. ISBN 0-85091-634-8.