North America Native Plant

Guadeloupe Tonguefern

Botanical name: Elaphoglossum erinaceum

USDA symbol: ELER2

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Guadeloupe Tonguefern: A Rare Caribbean Native for Tropical Gardens If you’re a fern enthusiast with a passion for rare and unusual species, the Guadeloupe tonguefern (Elaphoglossum erinaceum) might just capture your imagination. This lesser-known Caribbean native represents one of nature’s more elusive botanical treasures, offering a glimpse into the rich ...

Guadeloupe Tonguefern: A Rare Caribbean Native for Tropical Gardens

If you’re a fern enthusiast with a passion for rare and unusual species, the Guadeloupe tonguefern (Elaphoglossum erinaceum) might just capture your imagination. This lesser-known Caribbean native represents one of nature’s more elusive botanical treasures, offering a glimpse into the rich diversity of tropical fern species that call Puerto Rico home.

What Makes This Fern Special?

The Guadeloupe tonguefern belongs to the Elaphoglossum genus, a group known for their distinctive tongue-like fronds that give many species their common names. As a perennial fern, this species maintains its presence year-round in suitable conditions, making it a potentially valuable addition to tropical garden collections.

Unlike flowering plants, this fern reproduces through spores rather than seeds, and won’t attract pollinators since it doesn’t produce flowers. However, ferns like this one play important ecological roles in their native habitats, contributing to the forest understory and providing habitat structure for various small creatures.

Where Does It Come From?

This fascinating fern is native to Puerto Rico, where it likely grows in the island’s lush, humid forest environments. Puerto Rico’s diverse ecosystems provide ideal conditions for many fern species, from coastal areas to mountainous regions.

Growing Guadeloupe Tonguefern: What You Need to Know

Here’s where things get interesting – and challenging. The Guadeloupe tonguefern is not your typical garden center find. In fact, finding reliable information about its specific growing requirements proves quite difficult, which suggests this is either a very rare species or one that hasn’t been extensively studied or cultivated.

Ideal Growing Conditions

Based on what we know about similar Elaphoglossum species and its Puerto Rican origins, this fern likely prefers:

  • Warm, humid environments (USDA zones 10-11)
  • Filtered or dappled shade
  • Well-draining but consistently moist soil
  • Protection from direct sunlight and strong winds
  • High humidity levels

Is This Fern Right for Your Garden?

The honest answer is: probably not, unless you’re a serious collector with specific expertise in rare tropical ferns. The scarcity of information about this species suggests it’s either extremely rare in cultivation or requires very specialized conditions that are difficult to replicate in most garden settings.

If you’re drawn to the idea of growing Caribbean native ferns, you might want to consider more readily available alternatives that can provide similar aesthetic appeal with greater success rates. Many other Elaphoglossum species or Caribbean native ferns might offer a more practical entry point into tropical fern gardening.

A Word About Responsible Collection

If you do encounter this rare fern for sale or trade, make absolutely sure it comes from responsibly sourced, propagated material rather than wild collection. Rare species like the Guadeloupe tonguefern need our protection in their native habitats.

The Bottom Line

While the Guadeloupe tonguefern represents an intriguing piece of Puerto Rico’s botanical heritage, it’s more likely to remain a species of scientific interest rather than a practical garden choice for most gardeners. Sometimes the most beautiful aspects of nature are best appreciated in their wild homes, where they’ve evolved to thrive in very specific conditions that are challenging to replicate elsewhere.

For those passionate about tropical ferns, this species serves as a reminder of the incredible diversity that exists in our natural world – and the importance of protecting the habitats where such rare treasures continue to flourish.

Guadeloupe Tonguefern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Dryopteridaceae Herter - Wood Fern family

Genus

Elaphoglossum Schott ex J. Sm. - tonguefern

Species

Elaphoglossum erinaceum (Fée) T. Moore - Guadeloupe tonguefern

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA