Chocolate Rim Lichen vs koala

Protoparmelia badia compared with Phascolarctos cinereus

Key Differences

Chocolate Rim Lichen is Near Threatened while koala is Vulnerable.

Taxonomic Classification

Rank	Chocolate Rim Lichen	koala
Kingdom	Fungi (균계)	Animalia (동물)
Phylum	Ascomycota (자낭균류)	Chordata (척삭동물)
Class	Lecanoromycetes (요강버섯강)	Mammalia (포유류)
Order	Lecanorales (레카노라목)	Diprotodontia (캥거루목)
Family	Parmeliaceae	Phascolarctidae (Koalas)
Genus	Protoparmelia	Phascolarctos (Koalas)
Species	Protoparmelia badia	Phascolarctos cinereus

Conservation Status

Chocolate Rim Lichen

NT — Near Threatened

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Chocolate Rim Lichen	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Chocolate Rim Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Chocolate Rim Lichen

The Chocolate Rim Lichen (Protoparmelia badia) is a crustose lichen in the family Parmeliaceae, found on exposed siliceous and acid rocks in montane and subalpine environments across Europe, North America, and other temperate and boreal regions. Crustose lichens form a tightly adhering crust directly on rock surfaces and lack the lobed margins of foliose lichens, making them impossible to remove from substrate without destroying the thallus. Protoparmelia badia forms a thin, pale grey to brownish-grey thallus with conspicuous reddish-brown to dark chocolate-brown apothecia (disc-shaped reproductive structures), from which the common name derives. The species is typical of well-lit, clean-air rocky habitats such as mountain summits, upland heathland, and acidic outcrops. Like many lichens, it is a pioneer coloniser of bare rock surfaces and contributes to the initial stages of soil formation. The IUCN classifies P. badia as Near Threatened, reflecting concerns about declining populations linked to air pollution — lichens are renowned biological indicators of air quality, being highly sensitive to sulphur dioxide, nitrogen oxides, and ammonia — as well as climate change effects on montane habitats and disturbance from rock climbing and other outdoor recreation.

koala

호주 동부와 동남부의 상징적인 유대류로, 체중이 최대 15kg이며 저칼로리인 유칼립투스 잎 식단에서 에너지를 절약하기 위해 하루 최대 22시간을 잠으로 보낸다. 대부분의 다른 포유류를 죽일 수 있는 유독한 유칼립투스 성분을 처리하도록 고도로 특화되어, 해독에 특별히 적응된 장내 미생물총을 지닌다. 2022년 기후 변화, 서식지 개발, 클라미디아 감염으로 인한 개체수 감소로 위기종으로 지정되었다.