arctic rustwort vs common greasewort

Marsupella arctica compared with Aneura pinguis

Key Differences

• arctic rustwort is Critically Endangered while common greasewort is Least Concern.

Taxonomic Classification

Rank	arctic rustwort	common greasewort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Marchantiophyta (liverwort)	Marchantiophyta (liverwort)
Class same	Jungermanniopsida (Jungermanniopsida)	Jungermanniopsida (Jungermanniopsida)
Order	Jungermanniales (Jungermanniales)	Metzgeriales (Metzgeriales)
Family	Gymnomitriaceae	Aneuraceae
Genus	Marsupella	Aneura
Species	Marsupella arctica	Aneura pinguis

Evolutionary Relationship

arctic rustwort and common greasewort share a common ancestor at the Class level: Jungermanniopsida. (Jungermanniopsida)

Conservation Status

arctic rustwort

CR — Critically Endangered

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	arctic rustwort	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arctic rustwort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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).

arctic rustwort

The Arctic rustwort (Marsupella arctica) is a species in the genus Marsupella. It is currently classified as Critically Endangered on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden