Hypoxylon nummularium

Hypoxylon nummularium is a species of fungus in the family Hypoxylaceae. It is commonly known as the "Beech Woodwart" due to its frequent occurrence on beech trees. The fungus is characterized by its small, disc-shaped fruit bodies that are typically black or dark brown in color.

Taxonomy

The species was first described scientifically by Christiaan Hendrik Persoon in 1801. The specific epithet nummularium is derived from the Latin nummulus, meaning "small coin", a reference to the shape and size of the fruit bodies.

Description

The fruit bodies of Hypoxylon nummularium are typically 1–3 mm in diameter, disc-shaped, and have a smooth surface. They are initially light brown in color, but darken to black as they mature. The spores are elliptical, smooth, and measure 7–10 by 3–4 µm.

Distribution and habitat

Hypoxylon nummularium is widely distributed in temperate regions of the world. It is commonly found on dead or dying wood of beech trees, but can also occur on other hardwood species. The fungus plays a role in the decomposition of wood and the recycling of nutrients in forest ecosystems.

See also

• List of Hypoxylon species
• Wood-decay fungus

External links

• MycoBank