Ionopsidium acaule

{{Short description|Species of plant}}

{{Speciesbox

|image = Ionopsidium-acaule.jpg

|image_caption =

|genus = Ionopsidium

|species = acaule

|authority = (Desf.) DC. ex Rchb.

|status = LC

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Caldas, F.B. |date=2011 |title=Ionopsidium acaule |volume=2011 |page=e.T161985A5523761 |doi=10.2305/IUCN.UK.2011-1.RLTS.T161985A5523761.en |access-date=19 November 2021}}

|status2 = LC

|status2_system = IUCN3.1

|status2_ref = {{Cite iucn |title=Ionopsidium acaule |author=Caldas, F.B. |name-list-style=amp |page=e.T161985A5523761 |date=2011 |doi=10.2305/IUCN.UK.2011-1.RLTS.T161985A5523761.en |access-date=6 April 2021}}

|synonyms =

• Cochlearia acaulis Desf.
• Cochlearia pusilla Brot.
• Cochlearia olisiponensis Brot.

|synonyms_ref = {{cite web |title=Ionopsidium acaule (Desf.) DC. ex Rchb. |url=https://www.catalogueoflife.org/data/taxon/6MX7F |publisher=Catalogue of Life |access-date=6 April 2021}}

}}

Ionopsidium acaule (Portuguese: {{lang|pt|cocleária-menor}}) is a species of flowering plant in the crucifer family Brassicaceae, endemic to coastal Portugal, specifically from Nazaré to Sagres. It inhabits wet sandy substrates, in clearings of junipers, pine forests and other xerophytic scrub. Sometimes semi-ruderal on roadsides. More rarely, on calcareous or basaltic-derived soils.