Coarse-leaved Mallee vs koala

Eucalyptus grossa compared with Phascolarctos cinereus

Key Differences

Coarse-leaved Mallee is Least Concern while koala is Vulnerable.

Taxonomic Classification

Rank	Coarse-leaved Mallee	koala
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (Mammals)
Order	Myrtales (Myrtales)	Diprotodontia (Marsupials)
Family	Myrtaceae	Phascolarctidae (Koalas)
Genus	Eucalyptus	Phascolarctos (Koalas)
Species	Eucalyptus grossa	Phascolarctos cinereus

Conservation Status

Coarse-leaved Mallee

LC — Least Concern

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Coarse-leaved Mallee	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Coarse-leaved Mallee

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Coarse-leaved Mallee

Eucalyptus grossa, the coarse-leaved mallee, is a multi-stemmed shrubby eucalyptus in the family Myrtaceae endemic to southwestern Western Australia. Like other mallee eucalypts, it grows from a lignotuber, a swollen underground rootstock that enables rapid regeneration after fire, drought, or mechanical damage. The species reaches 1.5–4 meters in height and is immediately recognizable by its unusually large, thick, and leathery leaves with a coarse texture that gives the species its common name; the leaves are among the broadest of any mallee eucalyptus. Large showy flowers with abundant golden stamens attract honeyeaters and other nectarivores. Eucalyptus grossa inhabits sandy soils of the Swan Coastal Plain and adjacent Darling Range foothills, growing in kwongan heath, mallee scrub, and transition zones between heathland and jarrah woodland. It is assessed as Least Concern by the IUCN, being relatively common and widespread within its coastal and near-coastal southwestern Australian range, though many surrounding habitats have been cleared for agriculture and urban development around Perth. The species is commonly cultivated as an ornamental shrub in Australian gardens and is used in revegetation programs due to its drought tolerance and attractive flowering.

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.