Blue-Gray Rosette Lichen vs Star Rosette Lichen

Physcia caesia compared with Physcia stellaris

Key Differences

• Blue-Gray Rosette Lichen is Least Concern while Star Rosette Lichen is Endangered.

Taxonomic Classification

Rank	Blue-Gray Rosette Lichen	Star Rosette Lichen
Kingdom same	Fungi (菌界)	Fungi (菌界)
Phylum same	Ascomycota (子嚢菌門)	Ascomycota (子嚢菌門)
Class same	Lecanoromycetes (チャシブゴケ菌綱)	Lecanoromycetes (チャシブゴケ菌綱)
Order same	Caliciales (Caliciales)	Caliciales (Caliciales)
Family same	Physciaceae	Physciaceae
Genus same	Physcia	Physcia
Species	Physcia caesia	Physcia stellaris

Evolutionary Relationship

Blue-Gray Rosette Lichen and Star Rosette Lichen share a common ancestor at the Genus level: Physcia.

Conservation Status

Blue-Gray Rosette Lichen

LC — Least Concern

Star Rosette Lichen

EN — Endangered

Physical Characteristics

Attribute	Blue-Gray Rosette Lichen	Star Rosette Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue-Gray Rosette Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States.

Star Rosette Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Blue-Gray Rosette Lichen

The Blue Gray Rosette Lichen (Physcia caesia) is a species in the genus Physcia. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 5 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States