Juncus caespiticius

{{Short description|Species of plant in the genus Juncus}}

{{Speciesbox

|image=Juncus caespiticius E.Meyer (AM AK289026-2).jpg

|image_caption=Herbarium specimen

|genus=Juncus

|species=caespiticius

|authority=E.Mey.

|synonyms_ref=

|synonyms=Juncus similis Buchenau

}}

Juncus caespiticius, the grassy rush, is a species of flowering plant in the family Juncaceae, native to coastal areas of southern Australia and New Zealand.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:442778-1 |title=Juncus caespiticius E.Mey. |author= |date=2017 |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=8 August 2021 }}{{cite web |url=https://vicflora.rbg.vic.gov.au/flora/taxon/aa1f0ade-7b9a-41ef-956b-e447ebb27b99 |title=Juncus caespiticius E.Mey. Grassy Rush |author= |date=2007 |website=VicFlora |publisher=Royal Botanic Gardens Foundation Victoria |access-date=8 August 2021 }} It usually grows in cool damp areas, preferring fresh or slightly brackish water.{{cite web |url=https://www.nzpcn.org.nz/flora/species/juncus-caespiticius |title=Juncus caespiticius Fact Sheet |last=de Lange |first=P.J. |date=2021 |website=nzpcn.org.nz |publisher=New Zealand Plant Conservation Network |access-date=8 August 2021 }}