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Latest revision as of 14:14, 17 March 2025
Honey Fungus is a common name given to several different species of fungus that all share similar characteristics. The most well-known species is Armillaria mellea, but others include Armillaria gallica, Armillaria ostoyae, and Armillaria tabescens. These fungi are found in forests and woodlands worldwide, and are known for their ability to cause root rot in a variety of trees and shrubs.
Characteristics[edit]
Honey Fungus is named for the golden-yellow color of its fruiting body, which typically grows in clusters on the trunks of infected trees. The fruiting body is a mushroom that can reach up to 15 cm in diameter, with a cap that is convex when young but flattens with age. The underside of the cap features gills that are white to cream in color.
The fungus is saprophytic, meaning it feeds on dead or decaying organic matter. However, it can also behave as a parasite, infecting living trees and causing root rot. The fungus spreads through rhizomorphs, which are root-like structures that grow through the soil and can infect neighboring trees.
Impact on Ecosystems[edit]
Honey Fungus plays a significant role in forest ecosystems by decomposing dead wood and recycling nutrients. However, when it behaves as a parasite, it can cause significant damage. Infected trees may show symptoms such as reduced growth, yellowing leaves, dieback of branches, and eventually death.
In some cases, Honey Fungus can cause large-scale tree mortality, leading to significant changes in forest composition and structure. The largest known organism in the world is a colony of Armillaria ostoyae in Oregon, USA, which covers an area of 3.8 km² and is estimated to be over 2,400 years old.
Control[edit]
Controlling Honey Fungus can be challenging due to its ability to spread through rhizomorphs and survive in the soil for many years. Methods include removing infected trees and stumps, applying fungicides, and planting resistant species.
See Also[edit]
