Myrtle Beech

Nothofagus cunninghamii is a slow-growing evergreen tree reaching heights of up to 50 metres, with small, dark green, serrated leaves and a dense, textured canopy. It produces inconspicuous flowers pollinated by wind and small seeds dispersed locally, and can also regenerate vegetatively from root suckers and coppice growth after disturbance. As a dominant canopy species in cool temperate rainforest, it creates deeply shaded, humid microclimates that support diverse understorey plants, mosses, fungi, and invertebrate communities, and its long-lived, mature stands provide structural habitat for hollow-dependent fauna.

The species is endemic to Australia, occurring in Victoria and Tasmania, where it forms extensive stands in cool, moist, high-rainfall forests, often at higher elevations and in sheltered gullies protected from fire.

Its decline is driven by a combination of pressures. Historical and ongoing logging has fragmented and reduced old-growth stands, while road and rail infrastructure has further dissected habitat. Altered fire regimes, including both increased fire frequency and fire suppression affecting forest structure, threaten a species poorly adapted to burning.

Habitat conversion for housing and agricultural land use, including non-timber crops, continues to reduce forest extent. The tree is also vulnerable to Myrtle Wilt, a fungal disease that kills mature individuals, particularly following disturbance or drought stress linked to broader habitat shifting under changing climatic conditions.

Conservation measures include protection of remaining old-growth stands within reserves and national parks in Tasmania and Victoria, restrictions on logging in some designated areas, and ongoing monitoring of forest health and disease impact. Research continues into Myrtle Wilt dynamics and fire management strategies suited to fire-sensitive rainforest.

Population trends remain in decline, and the species' long generation time and sensitivity to fire and disease mean recovery, where habitat loss continues, is expected to be slow.