African ray vs common greasewort

Urogymnus asperrimus compared with Aneura pinguis

Key Differences

African ray is Vulnerable while common greasewort is Least Concern.

Taxonomic Classification

Rank	African ray	common greasewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Marchantiophyta (liverwort)
Class	Elasmobranchii	Jungermanniopsida (Jungermanniopsida)
Order	Myliobatiformes (Myliobatiformes)	Metzgeriales (Metzgeriales)
Family	Dasyatidae	Aneuraceae
Genus	Urogymnus	Aneura
Species	Urogymnus asperrimus	Aneura pinguis

Conservation Status

African ray

VU — Vulnerable

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	African ray	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

African ray

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan. Currently classified as Vulnerable 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).

African ray

The African ray (Urogymnus asperrimus) is a species in the genus Urogymnus. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia, 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.