Search / Plant Profile / Polystichum calderonense

Plant Profile

Monte Guilarte Holly Fern (Polystichum calderonense)

Photo Credit: Omar Monsegur

Global Rank: G1 - Critically Imperiled
Legal Status: Federally Endangered
Family: Dryopteridaceae
State: PR
Nature Serve ID: 134377
Lifeform: Forb/herb
Categories of Interest: Ferns
Date Inducted in National Collection:

Description:

Polystichum calderonense is a rare species of fern known by the common name Monte Guilarte hollyfern. Polystichum are terrestrial or rock-dwelling ferns of warm-temperate and montane tropical regions. Adult specimens are medium in size and reach 3-6 feet high. They have stout, slowly-creeping rootstocks that form a crown, with a vase-like ring of evergreen fronds. The primary reasons for endangerment include habitat loss, fires, poor forestry management practices

Where is Monte Guilarte Holly Fern (Polystichum calderonense) located in the wild?

Habitat:

cool, mossy ledges; partial shade

Distribution:

States & Provinces:

Monte Guilarte Holly Fern can be found in Puerto Rico

Which CPC Partners conserve Monte Guilarte Holly Fern (Polystichum calderonense)?

Fairchild Tropical Botanic Garden

Not Sponsored

Assigned 06/09/17

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Nature Serve Biotics

05/02/2017

Only two populations and a total population of 57 individuals.

01/01/2010

clearing, individuals, private individuals encroaching into forest (Calderon)

01/01/2010

60 plants total in 2 sites (La Silla de Calderon, Adjuntas; Cerrote de Penuelas, Penuelas) 57 individuals in 2 populations at 2 sites