North America Native Plant

Fanleaf Dwarf Polypody

Botanical name: Melpomense flabelliformis

USDA symbol: MEFL5

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Synonyms: Grammitis flabelliformis (Poir.) Morton (GRFL3)  âš˜  Grammitis taenifolia (Jenman) Proctor (GRTA)  âš˜  Polypodium taenifolium Jenman (POTA5)   

Fanleaf Dwarf Polypody: A Rare Puerto Rican Fern Worth Knowing Meet the fanleaf dwarf polypody (Melpomense flabelliformis), one of Puerto Rico’s most elusive native ferns. If you’ve never heard of this little green wonder, you’re not alone – it’s so rare that even experienced native plant enthusiasts might do a ...

Fanleaf Dwarf Polypody: A Rare Puerto Rican Fern Worth Knowing

Meet the fanleaf dwarf polypody (Melpomense flabelliformis), one of Puerto Rico’s most elusive native ferns. If you’ve never heard of this little green wonder, you’re not alone – it’s so rare that even experienced native plant enthusiasts might do a double-take at its name!

What Exactly Is Fanleaf Dwarf Polypody?

The fanleaf dwarf polypody is a perennial fern that’s native exclusively to Puerto Rico. Like many ferns, it’s a fascinating plant that reproduces through spores rather than flowers or seeds. You might also see it referenced in botanical literature under several scientific synonyms, including Grammitis flabelliformis, Grammitis taenifolia, and Polypodium taenifolium.

Where Does It Call Home?

This unique fern is found only in Puerto Rico, making it what botanists call an endemic species – basically, it’s Puerto Rico’s very own botanical treasure that exists nowhere else on Earth naturally.

The Mystery Plant Challenge

Here’s where things get interesting (and a bit mysterious): the fanleaf dwarf polypody is so rare and understudied that we know surprisingly little about many aspects of this plant. Information about its specific growing conditions, wildlife benefits, and even its exact appearance in the wild remains largely undocumented in accessible horticultural resources.

Why Should Gardeners Care?

Even though you’re unlikely to find this fern at your local nursery, understanding plants like the fanleaf dwarf polypody helps us appreciate the incredible diversity of native flora. Here are a few reasons why this little fern matters:

  • It represents the unique evolutionary heritage of Puerto Rico’s ecosystems
  • As a native species, it likely plays important ecological roles we’re still discovering
  • Its rarity reminds us of the importance of habitat conservation

A Word of Caution for Plant Collectors

If you’re ever lucky enough to encounter this fern in the wild or through specialized sources, remember that rare native plants require extra care and consideration. Any collection or cultivation should only be done through responsible, legal channels that don’t impact wild populations.

Better Alternatives for Your Garden

Since the fanleaf dwarf polypody isn’t readily available for cultivation, consider these approaches if you’re interested in supporting Puerto Rico’s native plant heritage:

  • Research other Puerto Rican native ferns that are more readily available
  • Support organizations working on native plant conservation in Puerto Rico
  • Create habitat-friendly gardens using well-documented native species

The Bigger Picture

Plants like the fanleaf dwarf polypody remind us that there’s still so much to discover in the plant world. While we may not be able to grow this particular species in our gardens, learning about it connects us to the broader story of biodiversity and the importance of preserving native ecosystems.

Sometimes the most valuable plants aren’t the ones we can grow, but the ones that inspire us to protect the wild spaces where botanical mysteries still wait to be fully understood.

Fanleaf Dwarf Polypody

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Grammitidaceae Newman - Kihi Fern family

Genus

Melpomense A.R. Sm. & R.C. Moran - dwarf polypody

Species

Melpomense flabelliformis (Poir.) A.R. Sm. & C.R. Moran - fanleaf dwarf polypody

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