Without decay, the forest would choke. The Beech Heart Rot is not a murderer; it is a recycler. It targets the heartwood of living beech trees, breaking down the dense, central tissue that no longer conducts water. This process weakens the tree, making it prone to windthrow. When the tree falls, it creates a gap in the canopy. Light reaches the forest floor. New seedlings grow. The cycle continues. The fungus is essential for forest regeneration, though the individual tree may not appreciate the service. The fruiting body is a bracket fungus, large and hoof-shaped. It attaches directly to the trunk, often near the base. The upper surface is dark brown to black, rough and cracked like old leather. It is hard and woody to the touch. The underside is pale yellow or brown, covered in tiny pores rather than gills. These pores release spores into the air, carried by the wind to new hosts. The fungus does not produce a cap or stem. It is a shelf, a protrusion from the wood itself. This fungus is parasitic and saprotrophic. It enters the tree through wounds or broken branches. The mycelium spreads through the heartwood, digesting the lignin and cellulose. This decay creates a hollow centre, hence the name 'heart rot'. The tree may live for decades with this condition, its outer layers still transporting nutrients. But it is vulnerable. A strong wind can snap it. A heavy snow load can break it. The fungus waits for the fall. Beech Heart Rot is found throughout New Zealand, wherever southern beech grows. It is common in the South Island, particularly in old-growth forests. It fruits year-round, though the brackets are most visible in autumn and winter. It is not edible. The flesh is tough, woody, and inedible. It is best left alone. Its role is structural, not culinary. Threats are minimal. The species is widespread and common. However, it is sensitive to changes in forest structure. Logging removes the old, diseased trees that the fungus depends on. Without these hosts, the population declines. The fungi wait for the forest to mature. They do not rush. It carries on.