Olearia ramulosa

Olearia ramulosa
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Olearia
Species:	O. ramulosa
Binomial name
	Olearia ramulosa; (Labill.) Benth.[1]
Synonyms
	Aster ramulosus Labill.; Eurybia aculeata (Labill.) DC.; Eurybia ramulosa (Sims) (Labill.) DC.

Olearia ramulosa, the twiggy daisy-bush, is a species of flowering plant in the family Asteraceae.[2] It occurs in New South Wales, Victoria, South Australia and Tasmania.[2]

Jacques Labillardière described the twiggy daisy bush as Aster ramulosus in 1806, in volume 2 of his Novae Hollandiae Plantarum Specimen, from material collected in Tasmania.[3] The species name, derived from the Latin rama "branch", means having many small branches.[4] German botanist Christian Gottfried Daniel Nees von Esenbeck called it Diplostephium ramulosum in 1832,[5] and Swiss botanist Augustin Pyramus de Candolle called it Eurybia ramulosa in 1836.[6]

Alternative common names are oily bush and water cypress.[7]

Olearia ramulosa is a shrub that reaches 1.6 m in height. The narrow leaves are alternately arranged along the stems and measure 2–8 mm long by 0.8–2.5 mm wide with entire margins. The flowers appear from October to May. The daisy-like flower heads are 1–2 cm in diameter, with 2–13 white or mauve rays and a central yellow disc.[2] Flower heads can appear in great numbers and be highly conspicuous.[4]

The plant is eaten by caterpillars of the moth species Amelora milvaria.[8] Bees, beetles, and less commonly flies and wasps have been recorded visiting flowers in a Tasmanian field study.[9]

Olearia ramulosa can be propagated by seeds or cuttings of new growth that has hardened. It can be grown in dry or temperate climates and is frost-hardy in sunny or part-shaded spots. Pruning can invigorate it and it can be grown as a low hedge.[4]

References

"Olearia ramulosa". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2009-03-22.
"Olearia ramulosa (DC.) Benth". PlantNET – New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 2009-02-22.
Labillardiere, J.J.H. de (1806). Novae Hollandiae Plantarum Specimen (in Latin). 2. Paris, France: Ex typographia Dominæ Huzard. p. 51.
Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1997). Encyclopaedia of Australian Plants Suitable for Cultivation. 7: N–Po. Port Melbourne, Victoria: Lothian Press. p. 93. ISBN 0-85091-634-8.
Nees von Esenbeck, C.G.D. (1832). Genera et Species Asterearum (in Latin). p. 193.
De Candolle, Augustin Pyramus (1836). Prodromus Systematis Naturalis Regni Vegetabilis (in Latin). 5. Paris, France: Sumptibus Sociorum Treuttel et Würtz. p. 270.
Cunningham, Geoff M.; Mulham, William E.; Milthorpe, Peter L.; Leigh, John H. (1981). Plants of Western New South Wales. Sydney, New South Wales: NSW Government Printing Service. p. 644. ISBN 0-7240-2003-9.
Common, I.F.B. (1990). Moths of Australia. CSIRO publishing. ISBN 9780643102712.
KINGSTON, ANDREW B.; QUILLAN, PETER B. (2000). "Are pollination syndromes useful predictors of floral visitors in Tasmania?" (PDF). Austral Ecology. 25 (6): 600–09. doi:10.1111/j.1442-9993.2000.tb00065.x.

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[APNI-1] "Olearia ramulosa". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2009-03-22.

[NSW-2] "Olearia ramulosa (DC.) Benth". PlantNET – New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia. Retrieved 2009-02-22.

[3] Labillardiere, J.J.H. de (1806). Novae Hollandiae Plantarum Specimen (in Latin). 2. Paris, France: Ex typographia Dominæ Huzard. p. 51.

[EJ97-4] Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1997). Encyclopaedia of Australian Plants Suitable for Cultivation. 7: N–Po. Port Melbourne, Victoria: Lothian Press. p. 93. ISBN 0-85091-634-8.

[5] Nees von Esenbeck, C.G.D. (1832). Genera et Species Asterearum (in Latin). p. 193.

[6] De Candolle, Augustin Pyramus (1836). Prodromus Systematis Naturalis Regni Vegetabilis (in Latin). 5. Paris, France: Sumptibus Sociorum Treuttel et Würtz. p. 270.

[PwNSW-7] Cunningham, Geoff M.; Mulham, William E.; Milthorpe, Peter L.; Leigh, John H. (1981). Plants of Western New South Wales. Sydney, New South Wales: NSW Government Printing Service. p. 644. ISBN 0-7240-2003-9.

[8] Common, I.F.B. (1990). Moths of Australia. CSIRO publishing. ISBN 9780643102712.

[9] KINGSTON, ANDREW B.; QUILLAN, PETER B. (2000). "Are pollination syndromes useful predictors of floral visitors in Tasmania?" (PDF). Austral Ecology. 25 (6): 600–09. doi:10.1111/j.1442-9993.2000.tb00065.x.