Brown Rat vs Clinging Snakefern

Rattus norvegicus compared with Microgramma heterophylla

Taxonomic Classification

Rank	Brown Rat	Clinging Snakefern
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Chordata (động vật có dây sống)	Tracheophyta
Class	Mammalia (lớp Thú)	Polypodiopsida (Lớp Dương xỉ)
Order	Rodentia (Bộ Gặm nhấm)	Polypodiales (Bộ Dương xỉ)
Family	Muridae (Mice & Rats)	Polypodiaceae
Genus	Rattus	Microgramma
Species	Rattus norvegicus	Microgramma heterophylla

Conservation Status

Brown Rat

LC — Least Concern

Clinging Snakefern

LC — Least Concern

Physical Characteristics

Attribute	Brown Rat	Clinging Snakefern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Clinging Snakefern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Found in Cuba.

Brown Rat

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Clinging Snakefern

Clinging Snakefern, Microgramma species, is a genus of small epiphytic ferns in the family Polypodiaceae found in tropical and subtropical forests of the Americas, from Florida and the Caribbean through Central America to South America. The ferns cling tightly to tree bark and rock surfaces using creeping rhizomes with specialized clinging scales, making them true epiphytes that depend entirely on the host surface for physical support while deriving all their water and nutrients from rainfall and atmospheric deposition. The common name 'snakefern' refers to the slender, creeping rhizomes that resemble snakes threading through moss and bark. The fronds are small and simple, either entirely fertile bearing sori on their undersurface or sterile with entire margins. Clinging snakeferns contribute to the high epiphyte diversity of tropical forest canopies and are important components of the moss-and-lichen matrix on tree trunks in humid forests. They are sensitive to moisture availability and desiccation and are among the first species to decline when humid forest is cleared or fragmented. Several Microgramma species are used as ornamental plants in warm-climate gardens for their ability to creep over rocks and tree stumps. Conservation status varies by species within the genus.

Shared Countries

Both species can be found in 1 countries:

🇨🇺 Cuba