Polystichum calderonense NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.Also is a rare species of fern known by the common name Monte Guilarte hollyfern. It is endemic to Puerto Rico, where it occurs in the Peñuelas and Guilarte Commonwealth Forests. There are only 57 individual plants remaining. It is a federally listed endangered species of the United States. Name Homonyms Polystichum calderonense Proctor Common names Monte Guilarte hollyfern in English Bibliographic References. U. S. Fish and Wildlife Service, 1993: Endangered and Threatened Wildlife and Plants; Determination of Endangered Status for Four Endemic Puerto Rican Ferns. Federal Register, vol. 58, no. 109. 32308
ITIS Reports — ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.
Full Name: Polystichum calderonense
Where found: Wherever found
Species Group:Ferns and Allies