Grammitis basalis

{{Short description|Species of fern}}

{{Speciesbox

| image =

| status = EN

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Navarrete, H. |author2=Pitman, N. |date=2003 |title=Grammitis basalis |volume=2003 |page=e.T43718A10823475 |doi=10.2305/IUCN.UK.2003.RLTS.T43718A10823475.en |access-date=17 November 2021}}

| genus = Grammitis

| species = basalis

| authority = (Maxon ex C.V.Morton) Lellinger

| synonyms =

}}

Grammitis basalis is a species of fern in the family Polypodiaceae. It is endemic to Ecuador. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.