Asterolasia elegans
{{Short description|Species of flowering plant}}
{{Use dmy dates|date=July 2019}}
{{Speciesbox
|image = Asterolasia elegans.jpg
|image_caption = In Mount Annan Botanic Garden
|status_system = EPBC
|status = EN
|genus = Asterolasia
|species = elegans
|authority = L.McDougall & Porteners{{cite web|title=Asterolasia elegans|url= https://biodiversity.org.au/nsl/services/apc-format/display/118820|publisher=Australian Plant Census|accessdate=26 June 2020}}
}}
Asterolasia elegans is a species of slender, erect shrub that is endemic to a restricted area of New South Wales. It has dense, woolly, rusty star-shaped hairs on its stems, lance-shaped leaves densely covered with white and rust-coloured hairs on the lower surface, and white flowers arranged singly or in groups of up to nine in leaf axils or on the ends of branchlets, the back of the petals densely covered with woolly, white hairs.
Description
Asterolasia elegans is an erect, spindly shrub that typically grows to a height of {{cvt|1–3|m}} with its stems densely covered with woolly, rusty-red, star-shaped hairs. The leaves are lance-shaped to elliptical, {{cvt|40–130|mm}} long and {{cvt|9–25|mm}} wide on a petiole {{cvt|5–15|mm}} long. The leaves are covered with white and rusty-red star-shaped hairs, densely so on the lower surface. The flowers are arranged singly or in umbels of up to nine in leaf axils or on the ends of branchlets, each flower on a pedicel {{cvt|4–18|mm}} long. The petals are white, elliptical, {{cvt|8–14|mm}} long, densely covered with white, star-shaped hairs on the back and there are ten stamens.{{cite web |title=Asterolasia elegans |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Asterolasia~elegans|publisher=Royal Botanic Garden Sydney |accessdate=26 June 2020}}{{cite web |last1=Wilson |first1=Paul G. |title=Asterolasia elegans |url=https://profiles.ala.org.au/opus/foa/profile/Asterolasia%20elegans|publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment, Canberra |accessdate=26 June 2020}}{{cite journal |last1=McDougall |first1=Lyn |last2=Porteners |first2=Marianne F. |title=Asteroasia elegans (Rutaceae), a new species from the Sydney region |journal=Telopea |date=1990 |volume=4 |issue=1 |pages=139–140 |doi=10.7751/telopea19904922|doi-access=free }}
Taxonomy
Asterolasia elegans was first formally described in 1990 by Lyn McDougall and Marianne F. Porteners in the journal Telopea from specimens collected by McDougall near Maroota in 1989.{{cite web|title=Asterolasia elegans|url= https://id.biodiversity.org.au/instance/apni/538747|publisher=APNI|accessdate=25 June 2020}}
Distribution and habitat
Conservation status
Asterolasia elegans is only known from seven populations over a distance of {{cvt|37|km}} and is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016. The main threats to the species include inappropriate fire regimes, habitat loss, weed invasion and grazing by feral animals and domestic livestock.{{cite web |title=Asterolasia elegans - profile |url=https://www.environment.nsw.gov.au/threatenedspeciesapp/profile.aspx?id=10072 |publisher=New South Wales Government Office of Environment and Heritage |accessdate=26 June 2020}}{{cite web |title=National Recovery Plan - Asterolasia elegans |url=http://www.environment.gov.au/system/files/resources/9434e13b-4498-48f4-8f74-39455c83e5e7/files/asterolasia-elegans-recovery-plan.pdf |publisher=Australian Government Department of the Environment |accessdate=26 June 2020}}