CR

Morrisby's Gum

Eucalyptus morrisbyi

DecliningCRAU

Overview

Eucalyptus morrisbyi is a small to medium-sized eucalypt in the family Myrtaceae, typically growing as a mallee or small tree with smooth, grey-white bark that sheds in ribbons, and characteristic glossy, rounded to lance-shaped adult leaves. Like other eucalypts, it produces clusters of small white flowers that provide nectar for insects, birds, and other pollinators, and its foliage and hollows contribute habitat and forage resources for local fauna. As a long-lived woody plant, it also plays a structural role in the vegetation communities it occupies, contributing to soil stability and canopy cover in the landscapes where it persists.

The species is endemic to Tasmania, Australia, where it occurs in a small number of localized populations. It grows in terrestrial habitats as well as areas associated with inland wetlands, including sites near permanent rivers and streams, typically on well-drained soils in open forest or woodland settings.

The primary ongoing threat to Eucalyptus morrisbyi is the conversion and disturbance of its habitat for annual and perennial non-timber crop production, which fragments and reduces the extent of suitable growing sites. This agricultural pressure limits natural regeneration and constrains the species to a small number of remnant patches, increasing vulnerability to further decline.

Conservation attention for this species has included population monitoring, habitat protection efforts, and seed banking and ex situ propagation programs aimed at securing genetic material for restoration and reintroduction. Some populations occur within reserved or managed land, offering partial protection from clearing.

Given its restricted range, ongoing habitat pressure, and small population size, Eucalyptus morrisbyi remains classified as Critically Endangered, with a decreasing population trend and a precarious long-term outlook absent sustained intervention.

Morrisby's Gum is primarily threatened by land being cleared and converted for growing crops, which destroys the trees' natural habitat. This ongoing agricultural conversion continues to reduce the space available for this species to grow and regenerate. This threat is currently ongoing and stable, with no indication of increasing or decreasing pressure based on available data.

Threat summary

Habitat

Wetlands (inland) - Permanent rivers/streams· major

Conservation measures underway

Site/area protectionEx-situ conservation

Frequently asked questions

Why is Morrisby's Gum classified as Critically Endangered?
Morrisby's Gum is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Morrisby's Gum is primarily threatened by land being cleared and converted for growing crops, which destroys the trees' natural habitat. This ongoing agricultural conversion continues to reduce the space available for this species to grow and regenerate. This threat is currently ongoing and stable, with no indication of increasing or decreasing pressure based on available data.
Where does Morrisby's Gum live?
Morrisby's Gum occurs in Australia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Morrisby's Gum?
The main threats to Morrisby's Gum are 2.1. The full IUCN-classified threat record for this species is detailed on the species page.

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