North America Native Plant

Dwarf Polypody

Botanical name: Melpomense

USDA symbol: MELPO

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Dwarf Polypody: A Mysterious Puerto Rican Fern If you’ve stumbled across the name dwarf polypody or its botanical designation Melpomense, you might be scratching your head – and for good reason! This little fern presents quite the taxonomic puzzle that even botanists would find intriguing. What Exactly Is Melpomense? According ...

Dwarf Polypody: A Mysterious Puerto Rican Fern

If you’ve stumbled across the name dwarf polypody or its botanical designation Melpomense, you might be scratching your head – and for good reason! This little fern presents quite the taxonomic puzzle that even botanists would find intriguing.

What Exactly Is Melpomense?

According to available information, Melpomense is classified as a perennial fern native to Puerto Rico. The common name dwarf polypody suggests it belongs to the polypody family, which includes many small, charming ferns that grow on rocks, trees, and other surfaces. However, here’s where things get interesting (and a bit mysterious) – Melpomense doesn’t appear to follow standard botanical naming conventions, which typically use a two-part scientific name consisting of genus and species.

Native Status and Geographic Distribution

This fern is reported to be native to Puerto Rico, where it presumably grows as part of the island’s rich tropical flora. Puerto Rico’s warm, humid climate provides ideal conditions for many fern species to thrive.

Understanding Fern Growth Habits

What we do know is that this plant is described as a forb – essentially a non-woody plant that lacks significant woody tissue above ground. While this classification might seem unusual for a fern, it indicates that Melpomense likely has a herbaceous growth pattern typical of many smaller fern species.

The Mystery of Identification

Here’s where things get tricky for gardeners and plant enthusiasts. Without more concrete taxonomic information, identifying this specific fern becomes challenging. If you’re interested in dwarf polypody ferns from Puerto Rico, you might want to look into:

  • Consulting with local botanists or extension services in Puerto Rico
  • Checking with specialized fern societies or tropical plant organizations
  • Examining herbarium specimens if you have access to botanical collections

Benefits to Your Garden (If You Can Find It!)

Assuming this is indeed a small polypody fern, it would likely offer several benefits to a tropical or subtropical garden:

  • Low-maintenance ground cover for shaded areas
  • Adds texture and tropical appeal to landscapes
  • Helps retain soil moisture in garden beds
  • Provides habitat for small creatures and insects

A Word of Caution for Plant Hunters

If you’re determined to track down this particular fern, please proceed with caution. Since we don’t have information about its rarity status or conservation needs, it’s crucial to:

  • Only source plants from reputable, ethical suppliers
  • Never collect from wild populations
  • Verify the plant’s identity before purchasing
  • Consider similar, well-documented polypody ferns as alternatives

The Bottom Line

While the mystery of Melpomense remains unsolved, it highlights the fascinating complexity of plant taxonomy and the importance of accurate botanical naming. If you’re drawn to small, tropical ferns for your Puerto Rican garden or greenhouse, consider exploring well-documented polypody species that share similar characteristics. Sometimes the most intriguing plants are those that keep a few secrets – even from the botanists!

Have you encountered this mysterious fern in your gardening adventures? We’d love to hear from readers who might have more information about this elusive Puerto Rican native.

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

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