Native Plants

Tall Tonguefern

Elaphoglossum alatum var. fauriei

USDA symbol: ELALF

perennial forb

Hawaii: native

Meet the tall tonguefern (Elaphoglossum alatum var. fauriei), a fascinating native Hawaiian fern that’s as rare as it is intriguing. This perennial beauty belongs to the diverse world of epiphytic ferns, making it quite different from the typical garden ferns you might be familiar with. The tall tonguefern is a ...

Tall Tonguefern may be listed as rare in your area.
Global Conservation Status

Status: S3T3 | Subspecies or variety is vulnerable: Found only in a restricted range, even if abundant at some locations. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals.

Tall Tonguefern: Hawaii’s Rare Native Epiphytic Beauty

Meet the tall tonguefern (Elaphoglossum alatum var. fauriei), a fascinating native Hawaiian fern that’s as rare as it is intriguing. This perennial beauty belongs to the diverse world of epiphytic ferns, making it quite different from the typical garden ferns you might be familiar with.

What Makes This Fern Special?

The tall tonguefern is a true Hawaiian native, found exclusively in the Hawaiian Islands. As its scientific name suggests, this variety was named after Faurie, likely honoring the botanist who first collected or studied it. What makes this fern particularly noteworthy is its classification as a forb—a non-woody vascular plant that lacks significant woody tissue above ground.

This fern is endemic to Hawaii, meaning you won’t find it growing naturally anywhere else in the world.

  • Species observed
  • No observations

Conservation Alert: A Rare Treasure

Here’s something important every plant lover should know: the tall tonguefern has a Global Conservation Status of S3T3, indicating it’s quite rare. This means that while this fern exists, it’s not common and requires our attention for conservation.

If you’re interested in growing this species, it’s crucial to source it only from reputable nurseries that propagate it responsibly. Never collect plants from the wild—this helps protect the remaining natural populations.

Where Does It Grow?

In its natural habitat, the tall tonguefern typically grows in upland areas. Its wetland status is Facultative Upland, which means:

  • It usually prefers non-wetland conditions
  • It can occasionally tolerate wetland environments
  • It’s quite adaptable to different moisture levels

Identifying Tall Tonguefern

As with many Elaphoglossum species, this fern likely features the characteristic tongue-like fronds that give the genus its common name. The fronds are typically simple (undivided) and have a leathery texture that helps them survive in epiphytic conditions.

You might also encounter this fern listed under its botanical synonym: Elaphoglossum fauriei.

Is It Right for Your Garden?

Given its rarity status and specific Hawaiian habitat requirements, the tall tonguefern isn’t typically available for home gardens. Most gardeners outside of Hawaii would find it challenging to provide the specific conditions this endemic species requires.

If you’re passionate about native Hawaiian plants and have experience with epiphytic ferns, you might consider reaching out to specialized native plant societies or botanical gardens for guidance. However, for most gardeners, choosing more readily available native ferns would be a more practical and environmentally responsible choice.

The tall tonguefern serves as a beautiful reminder of Hawaii’s unique plant diversity and the importance of protecting these irreplaceable natural treasures for future generations.

Elaphoglossum alatum var. fauriei is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Elaphoglossum alatum var. fauriei is also known as:

Elaphoglossum fauriei | USDA symbol: ELFA2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Fern
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Division: Pteridophyta - Ferns
Class: Filicopsida
Order: Polypodiales
Family: Dryopteridaceae Herter - Wood Fern family
Genus: Elaphoglossum Schott ex J. Sm. - tonguefern

Species: Elaphoglossum alatum Gaudich. - tall tonguefern

Variety: Elaphoglossum alatum Gaudich. var. fauriei (Copeland) W.R. Anderson & Crosby - tall tonguefern

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