collared notchwort vs koala

Mesoptychia collaris compared with Phascolarctos cinereus

Key Differences

collared notchwort is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	collared notchwort	koala
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Marchantiophyta (печёночные мхи)	Chordata (хордовые)
Class	Jungermanniopsida (юнгерманиевые печёночники)	Mammalia (млекопитающие)
Order	Jungermanniales (юнгерманиевые)	Diprotodontia (двурезцовые сумчатые)
Family	Jungermanniaceae	Phascolarctidae (Koalas)
Genus	Mesoptychia	Phascolarctos (Koalas)
Species	Mesoptychia collaris	Phascolarctos cinereus

Conservation Status

collared notchwort

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	collared notchwort	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

collared notchwort

Habitat

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

Range

Distributed across 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.

collared notchwort

The Collared Notchwort, known scientifically as Mesoptychia collaris, is a liverwort belonging to the family Jungermanniaceae within the class Jungermanniopsida. Mesoptychia collaris is a bryophyte — a non-vascular land plant — and represents one of the leafy liverworts, characterised by flattened, leaf-like structures arranged along creeping stems. This species is associated with moist, shaded habitats typical of temperate regions, including areas of Europe and North America. It is reported to occur in Norway, Sweden, and the United States. Like other liverworts, Mesoptychia collaris plays a role in moisture retention and habitat structure in the ecosystems it inhabits. Detailed biological traits including typical lifespan measures and physical dimensions are poorly documented for this species in available literature. The Collared Notchwort is currently assessed as Least Concern on the IUCN Red List.

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.