Club Grain-Spored Lichen vs koala

Sarcogyne clavus compared with Phascolarctos cinereus

Key Differences

Club Grain-Spored Lichen is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Club Grain-Spored Lichen	koala
Kingdom	Fungi (फफूंद)	Animalia (प्राणी)
Phylum	Ascomycota (पुट कवक)	Chordata (रज्जुकी)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (स्तनधारी)
Order	Acarosporales (Acarosporales)	Diprotodontia (डाएप्रोटोडोंटिया)
Family	Acarosporaceae	Phascolarctidae (Koalas)
Genus	Sarcogyne	Phascolarctos (Koalas)
Species	Sarcogyne clavus	Phascolarctos cinereus

Conservation Status

Club Grain-Spored Lichen

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Club Grain-Spored Lichen	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Club Grain-Spored Lichen

Habitat

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

Range

Distributed across Denmark, Norway, 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.

Club Grain-Spored Lichen

Sarcogyne clavus is a crustose lichen in the family Acarosporaceae, forming closely appressed, granular to warty grey-white thalli on calcareous rocks, concrete, mortar, and exposed mineral substrates. The species is characterized by its distinctive club-shaped or clavate ascospores, from which its specific name derives. Like other Sarcogyne species, it produces apothecia that are typically lecideine (lacking a thalline margin), dark-colored, and often somewhat convex. This lichen favors exposed, sunny rock faces with high calcium content, including limestone outcrops, old walls, and stone monuments. S. clavus is distributed across Europe and North America, occurring primarily in calcareous rock habitats. As a pioneer colonizer of bare rock, it contributes to the initial stages of ecological succession by weathering the substrate and accumulating organic matter. The IUCN lists this species as Data Deficient, reflecting insufficient data on its population size, distribution, and ecology to assess its conservation status with confidence. Lichens as a group are sensitive to air pollution, but calcicolous crustose lichens on exposed rock may be less vulnerable than foliose or fruticose species.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.