Polystichum drepanum explained

Polystichum drepanum, also known as Madeira shield-fern,^[1] 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.^{[2] [3]}

Taxonomy

It was first described by Olof Swartz as Aspidium drepanum in 1801, and moved to the genus Polystichum by Carl Borivoj Presl in 1836.^[4]

Notes and References

1. 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 . IUCN . 2016-05-24 . International Union for Conservation of Nature . 10.2305/iucn.uk.2017-2.rlts.t162178a85427290.en . en. free .
2. Web site: Polystichum drepanum (Sw.) C.Presl Plants of the World Online Kew Science. 2021-11-20. Plants of the World Online. en.
3. Web site: Polystichum drepanum – The Ferns of Macaronesia. 2021-11-20. fernsofmacaronesia.org.uk.
4. Web site: Polystichum drepanum (Sw.) C.Presl. 2021-11-20. www.gbif.org. en.