Stereum insignitum

Morphological Features:

Basidiocarp annual, pileate, not resupinate, which can exceed 5 cm in radius, yet it is extremely thin, measuring only 1 to 2 mm in thickness. Typically fan- or oyster-shaped, and the upper surface of the pileus is zoned, displaying different color tones across its zones, always within ochre shades, ranging from brown to cream-ochre. The margin appears irregularly undulate, and the surface is tomentose, especially when young, but not hirsute. It is common for species of this type to develop greenish tints over time due to epiphytic lichen growth.

Hymenium smooth, neither tomentose nor hirsute, orange-ochre when young, fading with age.

Stipe lateral and minute, often absent, giving the visual appearance of arising directly from the substrate.

Flesh very thin and hard, tough, leathery in consistency, though somewhat elastic. Lacks significant odor or taste.

Habitat:

A fairly common species in its natural habitat, fruiting preferentially on beech stumps, growing in gregarious and imbricate clusters, with numerous individuals often observed on a single stump. This species can be found throughout the year.

Observations:

A typical wood-inhabiting fungus, particularly on beech, which can be relatively easily confused with other related species sharing its habitat. Stereum hirsutum is very similar, but its pileus is less zoned and covered with erect hairs, which this species lacks. Stereum ochraceoflavum is more effused, and more commonly found on other broadleaf or riparian trees. Another less known but very similar species is Stereum reflexulum, which fruits on junipers. Other Stereum species are more resupinate.