:Dryopteris crinalis

{{Short description|Species of fern}}

{{Speciesbox

| status = G3

| status_system = TNC

| genus = Dryopteris

| species = crinalis

| authority = (Hook. & Arn.) C.Chr.

}}

Dryopteris crinalis is a species of fern known as the serpent woodfern. It is endemic to Hawaii, where it is known from the main islands.{{Cite web |title=NatureServe Explorer 2.0 |url=https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.132702/Dryopteris_crinalis |access-date=2024-07-07 |website=explorer.natureserve.org}}

There are at least two varieties. The var. podosorus was federally listed as an endangered species of the United States in 2010.USFWS. [http://www.gpo.gov/fdsys/pkg/FR-2010-04-13/pdf/2010-1904.pdf#page=1 Determination of endangered status for 48 species on Kauai and designation of critical habitat; Final rule.] Federal Register April 13, 2010. There are three populations on Kauai, for a total of no more than 47 individual plants. The fern grows on walls of basalt in wet forests. Fronds grow up to {{Convert|3|ft|m|abbr=on}} long.{{Cite web |title=Lady Bird Johnson Wildflower Center - The University of Texas at Austin |url=https://www.wildflower.org/plants/result.php?id_plant=DRCR5 |access-date=2024-07-07 |website=www.wildflower.org}}