eggleaf bristle fern
Didymoglossum ovale
The eggleaf bristle fern (Didymoglossum ovale) is a delicate filmy fern characterized by its distinctive oval-shaped fronds that give it its common name. This small epiphytic species features translucent, membranous leaves that are typically only one cell thick, allowing it to efficiently absorb moisture and nutrients from humid air.
Taxonomy & Classification
Kingdom
Plantae
Phylum
Tracheophyta
Class
Polypodiopsida
Order
Hymenophyllales
Family
Hymenophyllaceae
Genus
Didymoglossum
eggleaf bristle fern belongs to the family Hymenophyllaceae, order Hymenophyllales, within the Polypodiopsida class.
Species Profile
The eggleaf bristle fern (Didymoglossum ovale) is a delicate filmy fern characterized by its distinctive oval-shaped fronds that give it its common name. This small epiphytic species features translucent, membranous leaves that are typically only one cell thick, allowing it to efficiently absorb moisture and nutrients from humid air. As part of the understory ecosystem, it contributes to biodiversity and serves as a microhabitat for various invertebrates.
The eggleaf bristle fern faces significant threats from habitat loss and degradation due to deforestation, agricultural expansion, and urban development across its range. Its specialized epiphytic lifestyle makes it particularly vulnerable to changes in forest microclimate and air quality, while its limited dispersal ability restricts colonization of new suitable habitats.
Key Facts
Habitat & Distribution
Epiphytic fern species typically found growing on tree trunks and branches in humid tropical and subtropical forests, particularly in areas with consistent moisture and filtered light conditions. The species requires stable forest microclimates with high humidity and is often associated with mature forest ecosystems.
Threats
Agricultural expansion and land conversion
Deforestation and forest fragmentation
Air pollution and atmospheric changes
Climate change affecting forest microclimates
Limited dispersal capacity restricting recolonization
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). eggleaf bristle fern (Didymoglossum ovale). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/eggleaf-bristle-fern