Autumn Snowflake vs

Acis autumnalis compared with Frustulia rhomboides

Key Differences

Autumn Snowflake is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Autumn Snowflake
Kingdom	Plantae (Plants)	Chromista (Chromista)
Phylum	Magnoliophyta (Flowering Plants)	Ochrophyta (Ochrophyta)
Class	Liliopsida (Monocots)	Bacillariophyceae (Bacillariophyceae)
Order	Asparagales (Asparagales)	Naviculales (Naviculales)
Family	Amaryllidaceae	Amphipleuraceae
Genus	Acis	Frustulia
Species	Acis autumnalis	Frustulia rhomboides

Conservation Status

Autumn Snowflake

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Autumn Snowflake
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Autumn Snowflake

Habitat

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

Range

Found in Norway.

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (Norway, Portugal, Sweden), North America (United States), and South America (Brazil).

Autumn Snowflake

The Autumn Snowflake (Acis autumnalis) is a species in the genus Acis. It is currently classified as Least Concern on the IUCN Red List. Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Frustulia rhomboides is a large, elongated freshwater diatom with a rhomboid outline and a distinctive raphe system embedded in siliceous ribs. It inhabits benthic and epiphytic habitats in acidic, humic freshwater environments including peat bogs and forest streams. This photosynthetic diatom is a bioindicator of acidic, dystrophic freshwater conditions.