Cep vs Common Silver Hairgrass

Boletus edulis compared with Aira caryophyllea

Key Differences

Cep is Least Concern while Common Silver Hairgrass is Endangered.

Taxonomic Classification

Rank	Cep	Common Silver Hairgrass
Kingdom	Fungi (Fungi)	Plantae (Plants)
Phylum	Basidiomycota (Club Fungi)	Magnoliophyta (Flowering Plants)
Class	Agaricomycetes (Mushrooms)	Liliopsida (Monocots)
Order	Boletales (Boletales)	Poales (Grasses)
Family	Boletaceae	Poaceae (Grass Family)
Genus	Boletus	Aira
Species	Boletus edulis	Aira caryophyllea

Conservation Status

Cep

LC — Least Concern

Common Silver Hairgrass

EN — Endangered

Physical Characteristics

Attribute	Cep	Common Silver Hairgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cep

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Brazil).

Common Silver Hairgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cameroon), Asia (Japan, South Korea), Europe (6 countries), North America (4 countries), Oceania and the Pacific (Australia), and South America (4 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Cep

The Cep (Boletus edulis) is a species in the genus Boletus. It is currently classified as Least Concern on the IUCN Red List. Native to ['Belgium', 'Brazil', 'Denmark', 'Norway', 'Portugal'].

Common Silver Hairgrass

<em>Aira caryophyllea</em>, commonly known as Common Silver Hairgrass, is a slender annual grass belonging to the family Poaceae within the order Poales. This delicate grass is currently classified as Endangered on the IUCN Red List, reflecting significant conservation concern despite its historically broad distribution. It is typically found across a remarkable diversity of biome types, including tropical and subtropical moist broadleaf forests, grasslands, savannas, and flooded habitats, demonstrating notable ecological versatility. Its geographic range spans multiple continents, with documented populations in Africa (Cameroon), Asia (Japan, South Korea), Europe, North America, Australia, and South America. As an annual grass, it completes its life cycle within a single growing season, reproducing via wind-dispersed seeds. The inflorescence typically bears silvery, shimmering spikelets that give the species its common name. Biological traits such as average lifespan, body dimensions, and dietary specifics follow typical patterns for annual grasses — drawing nutrients from soil through root absorption rather than consuming other organisms. The endangered status suggests populations may be declining due to habitat loss, land-use change, or invasive species pressure across parts of its range.