American Royal Fern vs S̄eụ̄x krong

Osmunda spectabilis compared with Panthera tigris

Key Differences

American Royal Fern is Least Concern while S̄eụ̄x krong is Endangered.

Taxonomic Classification

Rank	American Royal Fern	S̄eụ̄x krong
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Tracheophyta	Chordata (สัตว์มีแกนสันหลัง)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Osmundales (Osmundales)	Carnivora (สัตว์กินเนื้อ)
Family	Osmundaceae	Felidae (Cats)
Genus	Osmunda	Panthera (Big Cats)
Species	Osmunda spectabilis	Panthera tigris

Conservation Status

American Royal Fern

LC — Least Concern

S̄eụ̄x krong

EN — Endangered

Population: ~4.5K

Trend: Increasing ↑

Physical Characteristics

Attribute	American Royal Fern	S̄eụ̄x krong
Diet	—	Carnivore
Average Lifespan	—	20 years
Average Length	—	3.0 m
Average Weight	—	220.0 kg

Habitat & Geographic Range

American Royal Fern

Habitat

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

Range

Distributed across Brazil and United States.

S̄eụ̄x krong

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 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Ecuador. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

American Royal Fern

The American Royal Fern (Osmunda spectabilis) is a species in the genus Osmunda. It is currently classified as Least Concern on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies.

S̄eụ̄x krong

The largest wild cat on Earth, tigers can exceed 300 kg and inhabit forests from the Russian Far East to Southeast Asia. Solitary ambush predators with distinctive orange and black striped coats that provide camouflage in dappled light. Critically endangered, with fewer than 4,000 remaining in the wild due to poaching and deforestation.