North America Native Plant

King’s Cyclopeltis

Botanical name: Cyclopeltis kingii

USDA symbol: CYKI3

Life cycle: perennial

Habit: forb

Native status: Native to Pacific Basin excluding Hawaii  

King’s Cyclopeltis: A Rare Pacific Fern Worth Knowing About Meet King’s cyclopeltis (Cyclopeltis kingii), one of the Pacific’s best-kept botanical secrets. This perennial fern might not be gracing garden centers anytime soon, but it’s certainly worth understanding – especially if you’re fascinated by rare native plants or happen to live ...

King’s Cyclopeltis: A Rare Pacific Fern Worth Knowing About

Meet King’s cyclopeltis (Cyclopeltis kingii), one of the Pacific’s best-kept botanical secrets. This perennial fern might not be gracing garden centers anytime soon, but it’s certainly worth understanding – especially if you’re fascinated by rare native plants or happen to live in its very limited native range.

What Exactly Is King’s Cyclopeltis?

Despite some initial confusion in botanical databases, King’s cyclopeltis is actually a fern, not a flowering forb. This perennial species belongs to the fascinating world of Pacific island flora, where unique plants have evolved in isolation for millennia. Like other ferns, it reproduces through spores rather than flowers and seeds, making it quite different from your typical garden plants.

Where Does It Call Home?

King’s cyclopeltis is native to the Pacific Basin, but you won’t find it island-hopping everywhere. This selective fern has made its home specifically in Guam and Palau – two tropical paradises with very specific growing conditions. It’s what we call an endemic species, meaning it’s found nowhere else in the world naturally.

Why You Probably Won’t Find It at Your Local Nursery

Here’s the thing about King’s cyclopeltis – it’s incredibly rare in cultivation, and honestly, that’s probably for the best. This fern appears to be quite specialized in its needs, adapted to the specific tropical conditions of its island homes. For most gardeners, even those in warm climates, this plant would be nearly impossible to grow successfully.

Growing Conditions (If You’re Feeling Adventurous)

While detailed growing information is scarce, we can make some educated guesses based on its native habitat:

  • Tropical climate with high humidity year-round
  • Warm temperatures with minimal seasonal variation
  • Likely prefers filtered light or partial shade
  • Requires consistent moisture
  • Probably needs well-draining, organic-rich soil

Better Alternatives for Your Garden

Unless you live in Guam or Palau and have access to responsibly sourced material (which is unlikely), you’re better off choosing native ferns from your own region. Every area has its own fantastic native fern species that will thrive in local conditions and support local wildlife.

For tropical gardeners, consider native ferns like:

  • Local Pteris species
  • Regional Nephrolepis varieties
  • Indigenous tree ferns if your climate allows

The Conservation Angle

King’s cyclopeltis serves as a perfect reminder of why protecting native habitats is so crucial. These highly specialized island species often exist in small populations and can be extremely vulnerable to habitat loss, invasive species, and climate change. While you might not be able to grow this particular fern in your backyard, you can support conservation efforts and choose native plants that support your local ecosystem.

The Bottom Line

King’s cyclopeltis is more of a botanical curiosity than a practical garden choice for most of us. Its extreme rarity and specific habitat requirements make it unsuitable for typical home cultivation. Instead, let’s appreciate it as a unique piece of Pacific biodiversity and focus our gardening energy on native species that will actually thrive in our own backyards while supporting local wildlife.

Remember: the best garden plants are usually the ones that naturally want to grow where you live!

King’s Cyclopeltis

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

Cyclopeltis J. Sm. - cyclopeltis

Species

Cyclopeltis kingii (Hance) Hosok. - King's cyclopeltis

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