Carex fossa

{{Short description|Species of plant}}

{{Use dmy dates|date=February 2024}}

{{Speciesbox

| image =

| genus = Carex

| species = fossa

| authority = G.A.Wheeler

}}

Carex fossa is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of South America south of Brazil.{{cite web |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:329029-2|title=Carex fossa G.A.Wheeler |access-date=20 June 2023 |publisher=Kew Science – Plants of the World Online}}