Polystichum calderonense 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.This evergreen terrestrial fern grows in mountains of volcanic origin.
This page contains content from the copyrighted Wikipedia article "Polystichum calderonense"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.