Calamus vs fern-grass

Acorus calamus compared with Catapodium rigidum

Key Differences

• Calamus is Least Concern while fern-grass is Endangered.

Taxonomic Classification

Rank	Calamus	fern-grass
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Liliopsida (Monocots)	Liliopsida (Monocots)
Order	Acorales (Acorales)	Poales (Grasses)
Family	Acoraceae	Poaceae (Grass Family)
Genus	Acorus	Catapodium
Species	Acorus calamus	Catapodium rigidum

Evolutionary Relationship

Calamus and fern-grass share a common ancestor at the Class level: Liliopsida. (Monocots)

Conservation Status

Calamus

LC — Least Concern

fern-grass

EN — Endangered

Physical Characteristics

Attribute	Calamus	fern-grass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Calamus

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical coniferous forests within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (5 countries), Europe (30 countries), and North America (Canada, United States).

fern-grass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, montane grasslands and shrublands, and Mediterranean forests and woodlands, among 9 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (10 countries), North America (Mexico), Oceania and the Pacific (Australia), and South America (Argentina, Brazil, Chile). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Calamus

The Calamus (Acorus calamus) is a species in the genus Acorus. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical coniferous forests within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Shared Countries

Both species can be found in 9 countries:

🇧🇪 Belgium 🇧🇬 Bulgaria 🇨🇿 Czech Republic 🇩🇰 Denmark 🇩🇪 Germany 🇳🇴 Norway 🇵🇱 Poland 🇿🇦 South Africa 🇸🇪 Sweden