Olearia picridifolia
{{Short description|Species of Asteraceae}}
{{use dmy dates|date=July 2022}}
{{Speciesbox
|image =
|genus = Olearia
|species = picridifolia
|authority = (F.Muell.) Benth.{{cite web|title=Olearia picridifolia|url= https://biodiversity.org.au/nsl/services/apc-format/display/105619|publisher=Australian Plant Census|access-date=2 July 2022}}
|synonyms_ref =
|synonyms =
}}
Olearia picridifolia, commonly known as rasp scrub-daisy,{{cite web |title=Olearia picridifolia |url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Olearia_picridifolia |publisher=State Herbarium of South Australia |access-date=2 July 2022}} is a species of flowering plant in the family Asteraceae and is endemic to southern continental Australia. It is a low, spreading shrub with narrowly egg-shaped or narrowly elliptic leaves, and blue, mauve or white and yellow, daisy-like inflorescences.
Description
Olearia picridifolia is a spreading shrub that typically grows to a height of up to about {{cvt|50|cm}}, its branchlets and leaves covered with short, stiff hairs pressed against the surface. The leaves are narrowly elliptic or narrowly egg-shaped with the narrower end towards the base, {{cvt|10–65|mm}} long, {{cvt|1–9|mm}} wide and more or less sessile. The heads or daisy-like "flowers" are arranged singly or in small groups, on the ends of the branches or in leaf axils on a peduncle {{cvt|15–85|mm}} long, and are {{cvt|20–25|mm}} in diameter on a hemispherical involucre at the base. Each head has 20 to 30 white, blue, mauve or white ray florets, the ligule {{cvt|12–13|mm}} long, surrounding 40 to 80 yellow disc florets. Flowering occurs from July to November and the fruit is a glabrous achene {{cvt|2.5–3.5|mm}} long, the pappus {{cvt|4–5|mm}} long with 25 to 40 bristles.{{cite web |last1=Walsh |first1=Neville G. |last2=Lander |first2=Nicholas S. |title=Olearia picridifolia |url=https://vicflora.rbg.vic.gov.au/flora/taxon/41b725f5-9bfa-44b4-bc8c-2bef916bb0fb |publisher=Royal Botanic Gardens Victoria |access-date=2 July 2022}}{{FloraBase|name=Olearia picridifolia |id=8143}}
Taxonomy
This daisy was first formally described in 1853 by Ferdinand von Mueller who gave it the name Eurybia picridifolia in Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde, based on plant specimens that he collected in a rocky valley near Arkaba in South Australia.{{cite web|title=Eurybia picridifolia|url= https://id.biodiversity.org.au/instance/apni/531306|publisher=APNI|access-date=2 July 2022}}{{cite journal |last1=von Mueller |first1=Ferdinand |title=Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia |journal=Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde |date=1853 |volume=25 |pages=397–398 |url=https://www.biodiversitylibrary.org/item/109556#page/403/mode/1up |access-date=2 July 2022}} In 1867 George Bentham changed the name to Olearia picridifolia in Flora Australiensis.{{cite web |title=Olearia picridifolia |url=https://biodiversity.org.au/nsl/services/rest/name/apni/535231/api/apni-format |website=APNI |accessdate=2 July 2022}} The specific epithet (picridifolia) means "Picris-leaved".{{cite book |last1=Sharr |first1=Francis Aubi |last2=George |first2=Alex |title=Western Australian Plant Names and Their Meanings |date=2019 |publisher=Four Gables Press |location=Kardinya, WA |isbn=9780958034180 |page=277 |edition=3rd}}
Distribution and habitat
Rasp scrub-daisy grows in mallee and heath in scattered locations in the south of Western Australia, the south-east of South Australia, and in scattered locations in north-western Victoria.
References
{{Reflist}}
{{Taxonbar|from=Q15589910}}
Category:Taxa named by Ferdinand von Mueller
Category:Plants described in 1853