Calamus vs Small Adder's-Tongue

Acorus calamus compared with Ophioglossum azoricum

Key Differences

• Calamus is Least Concern while Small Adder's-Tongue is Critically Endangered.

Taxonomic Classification

Rank	Calamus	Small Adder's-Tongue
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Tracheophyta
Class	Liliopsida (Monocots)	Polypodiopsida (Polypodiopsida)
Order	Acorales (Acorales)	Ophioglossales (Ophioglossales)
Family	Acoraceae	Ophioglossaceae
Genus	Acorus	Ophioglossum
Species	Acorus calamus	Ophioglossum azoricum

Evolutionary Relationship

Calamus and Small Adder's-Tongue share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Calamus

LC — Least Concern

Small Adder's-Tongue

CR — Critically Endangered

Physical Characteristics

Attribute	Calamus	Small Adder's-Tongue
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).

Small Adder's-Tongue

Habitat

Inhabits boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Iceland, Norway, Portugal, and Sweden. Currently classified as Critically 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 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇸🇪 Sweden