chestnut worm vs common greasewort

Lumbricus castaneus compared with Aneura pinguis

Key Differences

• chestnut worm is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	chestnut worm	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Annelida (Segmented Worms)	Marchantiophyta (liverwort)
Class	Clitellata (Clitellata)	Jungermanniopsida (Jungermanniopsida)
Order	Crassiclitellata (Crassiclitellata)	Metzgeriales (Metzgeriales)
Family	Lumbricidae	Aneuraceae
Genus	Lumbricus	Aneura
Species	Lumbricus castaneus	Aneura pinguis

Conservation Status

chestnut worm

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	chestnut worm	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

chestnut worm

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, 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).

chestnut worm

The chestnut worm (Lumbricus castaneus) is a species in the genus Lumbricus. Native to Europe and North America, 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 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States