Hyphoderma

Hyphoderma is a genus of fungi belonging to the family Stelecia. These fungi are commonly known as poroid corticioid fungi, which means they exhibit pores on their fruiting bodies and have a crust-like or leathery growth habit. Species within Hyphoderma are saprobic, meaning they obtain nutrients by decomposing dead organic matter, primarily wood. Their growth can appear as resupinate (lying flat on the substrate) patches, sometimes with small, erect pores or teeth. The hymenium, the spore-producing surface, is typically smooth or can develop small, pore-like structures. The color of Hyphoderma fruiting bodies can vary, often appearing whitish, creamy, or pale brown. Microscopically, Hyphoderma is characterized by its hyphal system, often monomitic or dimitic, and the presence of cystidia, sterile cells found within the hymenium. These fungi play a role in forest ecosystems by breaking down lignin and cellulose, contributing to nutrient cycling. Distribution is widespread across various temperate and tropical regions. Identification of individual species often relies on a combination of macroscopic features of the fruiting body and microscopic examination of spores, basidia, and cystidia.