Calamus vs Oval Spike-Rush

Acorus calamus compared with Eleocharis ovata

Key Differences

• Calamus is Least Concern while Oval Spike-Rush is Near Threatened.

Taxonomic Classification

Rank	Calamus	Oval Spike-Rush
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	Cyperaceae
Genus	Acorus	Eleocharis
Species	Acorus calamus	Eleocharis ovata

Evolutionary Relationship

Calamus and Oval Spike-Rush share a common ancestor at the Class level: Liliopsida. (Monocots)

Conservation Status

Calamus

LC — Least Concern

Oval Spike-Rush

NT — Near Threatened

Physical Characteristics

Attribute	Calamus	Oval Spike-Rush
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).

Oval Spike-Rush

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Distributed across Belgium, Canada, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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 3 countries:

🇧🇪 Belgium 🇨🇦 Canada 🇺🇸 United States