vs

Achnanthes armillaris compared with Achnanthes impexa

Taxonomic Classification

Rank
Kingdom same	Chromista (Chromista)	Chromista (Chromista)
Phylum same	Ochrophyta (Ochrophyta)	Ochrophyta (Ochrophyta)
Class same	Bacillariophyceae (Bacillariophyceae)	Bacillariophyceae (Bacillariophyceae)
Order same	Achnanthales (Achnanthales)	Achnanthales (Achnanthales)
Family same	Achnanthaceae	Achnanthaceae
Genus same	Achnanthes	Achnanthes
Species	Achnanthes armillaris	Achnanthes impexa

Evolutionary Relationship

and share a common ancestor at the Genus level: Achnanthes.

Conservation Status

NE — Not Evaluated

NE — Not Evaluated

Physical Characteristics

Attribute
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Achnanthes armillaris is a small, monoraphid diatom in the family Achnanthidiaceae, attached to submerged substrates by a mucilage pad at one pole of its frustule. It inhabits freshwater streams, rivers, and lakes, forming part of the epilithic and epiphytic diatom community. Like other Achnanthes species, it serves as a bioindicator for water chemistry and flow regime in freshwater monitoring programs.

Achnanthes impexa is a species in the genus Achnanthes. It is not yet evaluated on the IUCN Red List. It is found across Norway and Sweden, inhabiting Native to Europe, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden