# Discaria

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{{Short description|Genus of flowering plants}}
{{Automatic taxobox
|image = Discaria chacaye 2.jpg
|image_caption = ''[Discaria chacaye](/source/Discaria_chacaye)''
|taxon = Discaria
|authority = [Hook.](/source/William_Jackson_Hooker)
|subdivision_ranks = Species
|subdivision = See text.
|synonyms =
* ''Chacaya'' <small>Escal.</small>
* ''Notophaena'' <small>Miers</small>
* ''Tetrapasma'' <small>G.Don</small>
}}

'''''Discaria''''' is a genus of 6 species of [flowering plant](/source/flowering_plant)s in the family [Rhamnaceae](/source/Rhamnaceae), native to temperate regions of the [Southern Hemisphere](/source/Southern_Hemisphere), in [Australia](/source/Australia), [New Zealand](/source/New_Zealand) and [South America](/source/South_America).

They are [deciduous](/source/deciduous) thorny [shrub](/source/shrub)s or small [tree](/source/tree)s growing to 2–5 m tall. They are also [non-legume nitrogen fixers](/source/Actinorhizal_plant).

Many of the world's ''Discaria'' species qualify as [xerophyte](/source/xerophyte)s in the true sense of the term, and the Australian species are no exception. They frequently occur on porous or well-drained sites and on soils of low fertility. Some species can fix [nitrogen](/source/nitrogen) from the atmosphere with the help of symbiotic bacteria (''[Frankia](/source/Frankia)'') that form nodules in their roots.<ref>{{Cite web|url=http://anpsa.org.au/APOL2009/mar09-2.html|title=The rare and remarkable species of Australian Discaria|website=anpsa.org.au|access-date=2016-12-02}}</ref>

==Taxonomy==
===Species===
''Discaria'' comprises the following species:<ref name="PlantList">{{cite web | url = http://www.theplantlist.org/1.1/browse/A/Rhamnaceae/Discaria/ | title = The Plant List entry for ''Discaria'' | date = September 2013 | website = [The Plant List](/source/The_Plant_List), v.1.1 | publisher = [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew) and the [Missouri Botanical Garden](/source/Missouri_Botanical_Garden) | access-date = 14 December 2020}}</ref><ref name="POWO">{{cite web | url = https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:33437-1 | author=Govaerts R | website = Plants of the World Online | title = ''Discaria'' Hook. | publisher=Board of Trustees of the Royal Botanic Gardens, Kew | access-date = 14 December 2020}}</ref>
* ''[Discaria americana](/source/Discaria_americana)'' <small>Gillies & Hook.</small>
* ''[Discaria articulata](/source/Discaria_articulata)'' <small>(Phil.) Miers</small>
<!-- Discaria australis was reclassified as Discaria pubescens. -->
* ''[Discaria chacaye](/source/Discaria_chacaye)'' <small>(G.Don) Tortosa</small>
<!-- Discaria cognata was reclassified as Discaria chacaye. -->
<!-- Discaria crenata was reclassified as Discaria chacaye. -->
<!-- Discaria dumosa was reclassified as Discaria chacaye. -->
<!-- Discaria exilis was reclassified as Discaria americana. -->
<!-- Discaria febrifuga was reclassified as Discaria americana. -->
<!-- Discaria foliosa was reclassified as Discaria chacaye. -->
<!-- Discaria gracilenta was reclassified as Discaria americana. -->
<!-- Discaria integrifolia was reclassified as Discaria chacaye. -->
<!-- Discaria longispina was reclassified as Discaria americana. -->
<!-- Discaria lycioides was reclassified as Discaria americana. -->
<!-- Discaria nana was reclassified as Ochetophila nana -->
* ''[Discaria nitida](/source/Discaria_nitida)'' <small>Tortosa</small>
* ''[Discaria pubescens](/source/Discaria_pubescens)'' <small>(Brongn.) Druce</small>
<!-- Discaria spiculata was reclassified as Discaria americana. -->
* ''[Discaria toumatou](/source/Discaria_toumatou)'' <small>Raoul</small>
<!-- Discaria trinervis was reclassified as Ochetophila trinervis. -->

===Hybrids===
The following hybrid has been described:<ref name="PlantList"/><ref name="POWO"/>
* ''Discaria'' × ''serratifolia'' <small>Benth. & Hook.f. ex Mast.</small>

===Species names with uncertain taxonomic status===
The status of the following species and hybrids is unresolved:<ref name="PlantList"/>
* ''Discaria'' × ''andina'' <small>(Miers) Speg.</small>
* ''Discaria aphylla'' <small>Meyen</small>
* ''Discaria parviflora'' <small>Hook.f.</small>
* ''Discaria pauciflora'' <small>Hook.f.</small>
* ''Discaria weddeliana'' <small>(Miers) Escal.</small>

==References==
{{Reflist}}

== External links ==
{{Commons category-inline}}

{{Taxonbar|from=Q5281423}}
{{Authority control}}

Category:Discaria
Category:Rhamnaceae genera

{{Rhamnaceae-stub}}

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Adapted from the Wikipedia article [Discaria](https://en.wikipedia.org/wiki/Discaria) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Discaria?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.