Cluster Fescue vs koala

Festuca paradoxa compared with Phascolarctos cinereus

Key Differences

Cluster Fescue is Extinct while koala is Vulnerable.

Taxonomic Classification

Rank	Cluster Fescue	koala
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Liliopsida (単子葉植物綱)	Mammalia (哺乳類)
Order	Poales (イネ目)	Diprotodontia (カンガルー目)
Family	Poaceae (Grass Family)	Phascolarctidae (Koalas)
Genus	Festuca	Phascolarctos (Koalas)
Species	Festuca paradoxa	Phascolarctos cinereus

Conservation Status

Cluster Fescue

EX — Extinct

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cluster Fescue	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Cluster Fescue

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Found in 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.

Cluster Fescue

Cluster fescue, known scientifically as Festuca paradoxa, is a perennial bunchgrass in the family Poaceae that holds the tragic distinction of being Extinct. Endemic to the central and eastern United States, this grass once inhabited moist, shaded woodland edges, floodplain forests, and riverbank communities where it formed discrete clumps characteristic of caespitose fescues. Festuca paradoxa was a slender, cool-season grass reaching approximately 60–120 centimeters in height, with flat or loosely rolled leaf blades and an open panicle inflorescence. It was associated with rich bottomland soils where periodic flooding maintained the open canopy conditions it required. The species declined catastrophically due to the widespread destruction of floodplain woodlands across its range through agricultural conversion, wetland drainage, and urban development over the nineteenth and twentieth centuries. Invasive species competition and altered hydrological regimes further compressed suitable habitat. The genus Festuca contains hundreds of species distributed globally in temperate and montane regions, but F. paradoxa occupied a narrow ecological niche that proved impossible to sustain amid large-scale landscape transformation. Its extinction represents a permanent loss from North American grassland diversity, and no living populations are known to persist anywhere in its former range.

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。