Brittle Bladderfern vs common greasewort

Cystopteris tenuis compared with Aneura pinguis

Key Differences

• Brittle Bladderfern is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	Brittle Bladderfern	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 tenuis	Aneura pinguis

Evolutionary Relationship

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

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Brittle Bladderfern	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brittle Bladderfern

Habitat

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

Range

Distributed across Canada and United States.

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).

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) 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 1 countries:

🇺🇸 United States