Bladder Fern vs common greasewort

Cystopteris fragilis compared with Aneura pinguis

Key Differences

• Bladder Fern is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	Bladder Fern	common greasewort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Tracheophyta	Marchantiophyta (liverwort)
Class	Polypodiopsida (Polypodiopsida)	Jungermanniopsida (Jungermanniopsida)
Order	Polypodiales (Polypodiales)	Metzgeriales (Metzgeriales)
Family	Cystopteridaceae	Aneuraceae
Genus	Cystopteris	Aneura
Species	Cystopteris fragilis	Aneura pinguis

Evolutionary Relationship

Bladder Fern and common greasewort share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Bladder Fern

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Bladder Fern	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bladder Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

common greasewort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 7 countries:

🇧🇪 Belgium 🇨🇴 Colombia 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan 🇺🇸 United States