Puerto Rico Maidenfern - Center For Plant Conservation
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Plant Profile

Puerto Rico Maidenfern (Thelypteris yaucoensis)

  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Thelypteridaceae
  • State: PR
  • Nature Serve ID: 159494
  • Date Inducted in National Collection:

Thelypteris yaucoensis is a rare species of fern known by the common name Puerto Rico maiden fern. This fern has fronds up to 17-20" long with the blades divided into 13 to 15 pairs of segments. There are less than 65 plants in three locations of Puerto Rico and these are mainly threatened by habitat loss, hurricanes, fires and botanical collectors.

Where is Puerto Rico Maidenfern (Thelypteris yaucoensis) located in the wild?


wooded slopes, moist forest, near dolomite



States & Provinces:

Puerto Rico Maidenfern can be found in Puerto Rico

Which CPC Partners conserve Puerto Rico Maidenfern (Thelypteris yaucoensis)?

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

  • 01/01/2010

fire at largest site

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Taxon Thelypteris yaucoensis
Authority Proctor
Family Thelypteridaceae
CPC Number 9875
ITIS 505485
Common Names Puerto Rico maiden fern
Associated Scientific Names Thelypteris yaucoensis
Distribution NA
State Rank
State State Rank
Puerto Rico
Ecological Relationships


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