Epacris exserta
{{Short description|Species of flowering plant}}
{{Use dmy dates|date=April 2022}}
{{Speciesbox
|image =
|image_caption =
|status = EN
|status_system = EPBC
|genus = Epacris
|species = exserta
|authority = R.Br.{{cite web|title=Epacris exserta|url= https://biodiversity.org.au/nsl/services/apc-format/display/64048|publisher=Australian Plant Census|access-date= 16 May 2022}}
|synonyms = Epacris exserta R.Br. var. exserta
}}
Epacris exserta , commonly known as South Esk heath,{{cite web |title=Epacris exserta |url=https://nre.tas.gov.au/Documents/Epacris-exserta-listing-statement.pdf |publisher=Tasmanian Government Department of Primary Industries, Parks, Water and the Environment |access-date=16 May 2022}} is a species of flowering plant in the heath family, Ericaceae and is endemic to Tasmania. It is an erect shrub with narrowly lance-shaped to elliptic leaves and tube-shaped, white flowers clustered near the ends of the branches.
Description
Epacris exserta is an erect shrub that typically grows to a height of up to {{cvt|1.5|m}} and has many glabrous stems. The leaves are narrowly lance-shaped to elliptic, {{cvt|7–11|mm}} long and {{cvt|1.1–1.3|mm}} wide with a small, short point on the tip. The flowers are arranged in clusters in leaf axils near the ends of branches on a peduncle covered with bracts. The petals form a cylindrical tube with the stamens and style protruding above the petal lobes.{{cite web |title=Threatened Tasmanian Forest Epacrids |url=https://www.awe.gov.au/sites/default/files/documents/threatened-tasmanian-forest-epacrids.pdf |publisher=Australian Government Department of Agriculture, Water and the Environment |access-date=16 May 2022}}
Taxonomy
Epacris exserta was first formally described in 1810 by Robert Brown in his Prodromus Florae Novae Hollandiae et Insulae Van Diemen.{{cite web|title=Epacris crassifolia |url=https://id.biodiversity.org.au/instance/apni/470353 |publisher=APNI|accessdate=16 May 2022}}{{cite book|last1=Brown|first1=Robert|title=Prodromus Florae Novae Hollandiae|date=1810|location=London|page=551 |url=https://www.biodiversitylibrary.org/item/29583#page/419/mode/1up|accessdate=16 May 2022}} The specific epithet (exserta) means "protruding".{{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=175 |edition=3rd}}
Distribution and habitat
This epacris grows on the banks of the South Esk, North Esk and Supply Rivers in northern Tasmania.{{cite web |last1=Jordan |first1=Greg |title=Epacris exserta |url=https://www.utas.edu.au/dicotkey/dicotkey/EPACRIDS/sEpacris_exserta.htm |publisher=University of Tasmania |access-date=16 May 2022}}
Conservation status
Epacris exserta is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the Tasmanian Government Threatened Species Protection Act 1995. The main threats to the species are land clearing, changes in river flow regimes, weed invasion and inappropriate fire regimes.
References
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Category:Ericales of Australia