brown hydra vs common greasewort

Hydra oligactis compared with Aneura pinguis

Key Differences

• brown hydra is Not Evaluated while common greasewort is Least Concern.

Taxonomic Classification

Rank	brown hydra	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Cnidaria (Cnidarians)	Marchantiophyta (liverwort)
Class	Hydrozoa (Hydrozoa)	Jungermanniopsida (Jungermanniopsida)
Order	Anthoathecata (Anthoathecata)	Metzgeriales (Metzgeriales)
Family	Hydridae	Aneuraceae
Genus	Hydra	Aneura
Species	Hydra oligactis	Aneura pinguis

Conservation Status

brown hydra

NE — Not Evaluated

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	brown hydra	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brown hydra

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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).

brown hydra

The Brown Hydra (Hydra oligactis) is a species in the genus Hydra. Native to Europe, inhabiting ecosystems characteristic of the region. Distributed across Denmark, Norway, and Sweden. As a member of the Hydra genus, this species contributes to biodiversity in its native range.

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden