Polystichum drepanum

{{Short description|Species of plant}}

{{Speciesbox

| image = Polystichum drepanum.jpg

| status = CR

| status_system = IUCN3.1

| status_ref =

| genus = Polystichum

| species = drepanum

| authority = (Sw.) C.Presl

| synonyms =

}}

Polystichum drepanum, also known as Madeira shield-fern,{{Cite report |url=http://www.iucnredlist.org/details/162178/0 |title=Polystichum drepanum: Christenhusz, M., Bento Elias, R., Dyer, R., Ivanenko, Y., Rouhan, G., Rumsey, F. & Väre, H.: The IUCN Red List of Threatened Species 2017: e.T162178A85427290 |last=IUCN |date=2016-05-24 |publisher=International Union for Conservation of Nature |doi=10.2305/iucn.uk.2017-2.rlts.t162178a85427290.en |language=en|doi-access=free }} is a species of fern in the Dryopteridaceae family.

It is native to Madeira. Its natural habitat is subtropical moist lowland forests. It is threatened by habitat loss.{{Cite web|title=Polystichum drepanum (Sw.) C.Presl {{!}} Plants of the World Online {{!}} Kew Science|url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:17206600-1|access-date=2021-11-20|website=Plants of the World Online|language=en}}{{Cite web|title=Polystichum drepanum – The Ferns of Macaronesia|url=https://fernsofmacaronesia.org.uk/home/fern-list/dryopteridaceae/polystichum-drepanum-2/|access-date=2021-11-20|website=fernsofmacaronesia.org.uk}}