North America Native Plant

Spleenwort

Botanical name: Asplenium ×biscaynianum

USDA symbol: ASBI3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Spleenwort: A Rare Florida Native Fern Worth Knowing If you’ve stumbled across the name Asplenium ×biscaynianum in your plant research, you’ve discovered one of Florida’s more mysterious native ferns. This particular spleenwort is a hybrid species—that little × symbol in its scientific name is the giveaway—and it’s quite the botanical ...

Spleenwort: A Rare Florida Native Fern Worth Knowing

If you’ve stumbled across the name Asplenium ×biscaynianum in your plant research, you’ve discovered one of Florida’s more mysterious native ferns. This particular spleenwort is a hybrid species—that little × symbol in its scientific name is the giveaway—and it’s quite the botanical curiosity.

What Makes This Spleenwort Special

As a member of the spleenwort family, Asplenium ×biscaynianum is a perennial fern that calls Florida home. Being a hybrid means it arose naturally from the crossing of two parent Asplenium species, creating something unique in the fern world. These botanical mashups don’t happen every day, which makes this particular spleenwort rather special in native plant circles.

Where You’ll Find It

This native spleenwort is found exclusively in Florida, making it a true local treasure. Its limited range suggests it has very specific habitat requirements and environmental conditions it needs to thrive.

Is It Right for Your Garden?

Here’s where things get a bit tricky. This particular spleenwort hybrid is quite rare and not commonly found in cultivation. If you’re lucky enough to encounter it in the wild, it’s best appreciated and left undisturbed. For gardeners looking to add native spleenworts to their landscapes, consider looking into other Asplenium species that are more readily available and better documented for garden use.

The Fern Factor

Like all ferns, this spleenwort won’t be attracting bees or butterflies—ferns reproduce through spores rather than flowers, so no nectar here. However, ferns do provide valuable ecosystem services:

  • They help stabilize soil with their root systems
  • Provide shelter and habitat for small creatures
  • Add texture and greenery to shaded areas
  • Contribute to the overall biodiversity of native plant communities

A Word of Caution

Given the limited information available about this particular hybrid and its restricted range, it’s likely quite rare. If you’re interested in native ferns for your garden, work with reputable native plant nurseries who can guide you toward similar spleenwort species that are more suitable for cultivation and don’t put wild populations at risk.

The Bottom Line

Asplenium ×biscaynianum represents the fascinating world of plant hybridization happening right in our native ecosystems. While it might not be the fern you’ll be planting in your garden, it’s a reminder of the incredible diversity and complexity of Florida’s native plant communities. Sometimes the rarest plants are the ones we appreciate most from a distance, knowing they’re out there doing their quiet work in the wild places they call home.

Spleenwort

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Aspleniaceae Newman - Spleenwort family

Genus

Asplenium L. - spleenwort

Species

Asplenium ×biscaynianum (D.C. Eaton) A.A. Eaton (pro sp.) [myriophyllum × trichomanes-dentatum] - spleenwort

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