North America Native Plant

Eggleaf Lacefern

Botanical name: Ctenitis nemorosa

USDA symbol: CTNE

Life cycle: perennial

Habit: forb

Native status: Native to Puerto Rico  

Synonyms: Dryopteris nemorosa (Humb. & Bonpl. ex Willd.) Urb. (DRNE6)   

Eggleaf Lacefern: A Rare Caribbean Native Worth Knowing If you’re fascinated by the world of tropical ferns, you might have stumbled across the intriguing Ctenitis nemorosa, commonly known as the eggleaf lacefern. This lesser-known fern species represents one of nature’s more elusive treasures from the Caribbean region. What is the ...

Eggleaf Lacefern: A Rare Caribbean Native Worth Knowing

If you’re fascinated by the world of tropical ferns, you might have stumbled across the intriguing Ctenitis nemorosa, commonly known as the eggleaf lacefern. This lesser-known fern species represents one of nature’s more elusive treasures from the Caribbean region.

What is the Eggleaf Lacefern?

The eggleaf lacefern (Ctenitis nemorosa) is a perennial fern that belongs to the diverse world of tropical vegetation. Unlike flowering plants, this species reproduces through spores and adds a distinctive texture to natural forest understories. You might also see it referenced by its scientific synonym, Dryopteris nemorosa, in older botanical texts.

As a forb-type plant, the eggleaf lacefern lacks significant woody tissue above ground, instead maintaining its structure through softer, more flexible stems and fronds that emerge from underground growing points.

Where Does It Come From?

This native beauty calls Puerto Rico home, where it has evolved to thrive in the island’s unique tropical conditions. Its distribution is quite limited, being found exclusively in Puerto Rico, which makes it a special find for fern enthusiasts.

Garden Benefits and Identification

While detailed growing information for this specific species is limited, the eggleaf lacefern can potentially offer several benefits to specialized gardens:

  • Adds authentic Caribbean native plant diversity
  • Provides unique texture and form in shaded areas
  • Contributes to natural ecosystem restoration projects
  • Offers educational value for tropical plant collections

Habitat Preferences

One interesting characteristic of the eggleaf lacefern is its facultative wetland status in the Caribbean region. This means it’s quite adaptable – you might find it thriving in both wetland conditions and drier areas, making it a versatile species in its native habitat.

A Word of Caution for Gardeners

Before you get too excited about adding this fern to your collection, there are some important considerations. The eggleaf lacefern appears to be quite rare and specialized, with limited availability in typical nursery settings. Its restricted native range to Puerto Rico suggests it may have very specific growing requirements that could be challenging to replicate outside its natural habitat.

If you’re interested in growing tropical ferns, you might want to consider more readily available native alternatives that can provide similar aesthetic benefits while being easier to establish and maintain in cultivation.

The Bottom Line

The eggleaf lacefern represents the fascinating diversity of Caribbean fern species, but it’s likely better appreciated in its natural habitat than in home gardens. For most gardeners, focusing on locally native fern species or well-established tropical varieties will provide more reliable results and better support for local ecosystems.

If you do encounter this species in the wild during visits to Puerto Rico, take a moment to appreciate this unique member of the island’s native flora – just remember to leave it undisturbed for future generations to discover and enjoy.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Caribbean

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Eggleaf Lacefern

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

Ctenitis (C. Chr.) C. Chr. ex Tardieu-Blot & C. Chr. - lacefern

Species

Ctenitis nemorosa (Humb. & Bonpl. ex Willd.) Ching - eggleaf lacefern

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