common greasewort vs Flat Wrack

Aneura pinguis compared with Fucus spiralis

Taxonomic Classification

Rank	common greasewort	Flat Wrack
Kingdom	Plantae (Plants)	Chromista (Chromista)
Phylum	Marchantiophyta (liverwort)	Ochrophyta (Ochrophyta)
Class	Jungermanniopsida (Jungermanniopsida)	Phaeophyceae (Phaeophyceae)
Order	Metzgeriales (Metzgeriales)	Fucales (Fucales)
Family	Aneuraceae	Fucaceae
Genus	Aneura	Fucus
Species	Aneura pinguis	Fucus spiralis

Conservation Status

common greasewort

LC — Least Concern

Flat Wrack

LC — Least Concern

Physical Characteristics

Attribute	common greasewort	Flat Wrack
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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).

Flat Wrack

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Found across Africa (Morocco) and Europe (9 countries).

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.