Blue-Gray Rosette Lichen vs koala

Physcia caesia compared with Phascolarctos cinereus

Key Differences

• Blue-Gray Rosette Lichen is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Blue-Gray Rosette Lichen	koala
Kingdom	Fungi (菌界)	Animalia (動物)
Phylum	Ascomycota (子嚢菌門)	Chordata (脊索動物)
Class	Lecanoromycetes (チャシブゴケ菌綱)	Mammalia (哺乳類)
Order	Caliciales (Caliciales)	Diprotodontia (カンガルー目)
Family	Physciaceae	Phascolarctidae (Koalas)
Genus	Physcia	Phascolarctos (Koalas)
Species	Physcia caesia	Phascolarctos cinereus

Conservation Status

Blue-Gray Rosette Lichen

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Blue-Gray Rosette Lichen	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

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.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable 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.

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。