Rutidosis leptorrhynchoides
{{Short description|Species of plant}}
{{Use dmy dates|date=July 2019}}
{{Speciesbox
|name=Button wrinklewort
|image=Rutidosis leptorrhynchoides 01.jpg
|image_caption=
|status=EN
|status_system=EPBC
|status_ref=
|genus=Rutidosis
|species=leptorrhynchoides
|authority=F.Muell.{{cite web |title=Rutidosis leptorrhynchoides |url=https://biodiversity.org.au/nsl/services/apc-format/display/105484 |publisher=Australian Plant Census |access-date=9 March 2023}}
|synonyms=
}}
File:Rutidosis leptorrhynchoides plant9 QNR - Flickr - Macleay Grass Man.jpg
Rutidosis leptorrhynchoides, commonly known as button wrinklewort,{{cite book |last1=Sharp |first1=Sarah |last2=Rehwinkel |first2=Rainer |last3=Mallinson |first3=Dave |last4=Eddy |first4=David |title=Woodland Flora a Field Guide for the Southern Tableland (NSW & ACT) |date=2015 |publisher=Horizons Print Management |location=Canberra |isbn=9780994495808}} is a flowering plant in the family Asteraceae. It is an upright, tufted, perennial herb with bright green leaves and yellow button-shaped flowers.
Description
Rutidosis leptorrhynchoides is a perennial herb with a simple or multi-branched from a woody rootstock, {{cvt|15-30|cm}} high, leafy, usually stems more or less smooth except those toward the base may be more or less woolly. The leaves are mostly borne on aerial stems, narrow, linear, bright green, {{cvt|15-35|mm}} long, {{cvt|0.5-1.5|mm}} wide, margins rolled under, mostly smooth and the apex pointed. Each stem has one yellow flower, {{cvt|8-15|mm}} in diameter made up of numerous florets about {{cvt|7|mm}} long, bracts arranged in rows of 5-8, dull green, edges occasionally toothed or more or less jagged. Flowering mostly occurs in summer and the fruit is a narrow, obovoid cypsela, brown, about {{cvt|1.5|mm}} long with several bristles {{cvt|3|mm}} long.{{cite web |last1=Harden |first1=G.J |title=Rutidosis leptorrhynchoides |url=https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Rutidosis~leptorrhynchoides |website=PlantNET-NSW flora online |publisher=Royal Botanic Gardens Sydney |access-date=10 March 2023}}{{cite book |last1=Cosgrove |first1=Meredith |title=Photographic Guide to Native Plants of the Australian Capital Territory |date=2014 |publisher=Meadow Argus |isbn=9780994183408 |page=164}}
Taxonomy
Rutidosis leptorrhynchoides was first formally described in 1866 by Ferdinand von Mueller and the description was published in Fragmenta Phytographiae Australiae.{{cite web |title=Rutidosis leptorrhynchoides |url=https://biodiversity.org.au/nsl/services/rest/instance/apni/535035 |publisher=Australian Plant Name Index |access-date=10 March 2023}}{{cite book |last1=von Mueller |first1=Ferdinand |title=Fragmenta Phytographiae Australiae 5(37) |date=1866 |location=Melbourne, Victoria |page=148 |edition=5(37) |url=https://www.biodiversitylibrary.org/item/7222#page/157/mode/1up}}
Distribution and habitat
Conservation
It is an endangered species under the Australian Environment Protection and Biodiversity Conservation Act 1999.{{cite web |title=Rutidosis leptorrhynchoides |url=https://www.dcceew.gov.au/environment/biodiversity/threatened/recovery-plans/button-wrinklewort-rutidosis-leptorrhynchoides-2012 |website=Australian Govt. National Recovery Plans |publisher=Department of Climate Change, Energy, the Environment and Water |access-date=10 March 2023}}