Hypholoma

Hypholoma is a genus of fungi in the family Hymenogastraceae. Species within this genus are commonly referred to as "brick caps" or "sulfur tufts" due to their color and tendency to grow in clusters. These mushrooms are typically found growing on dead or decaying wood, playing a role in decomposition.

The fruiting bodies of Hypholoma species generally have a convex to campanulate cap that flattens with age. The color can range from yellowish-brown to reddish-brown, often with darker scales or fibers. The gills are typically attached to the stem and are initially pale, becoming darker with age due to the development of spores. The spore print is usually purplish-brown.

Many Hypholoma species are considered inedible or mildly toxic, with some causing gastrointestinal upset. However, there are exceptions, and identification is crucial to distinguish between edible and toxic varieties. For example, Hypholoma capnoides is considered edible by some, while Hypholoma fasciculare is known to be poisonous.

The genus Hypholoma is widespread and found in temperate and tropical regions worldwide. They are saprotrophic, meaning they obtain nutrients from dead organic matter, and are an important part of forest ecosystems. Research into Hypholoma species continues, focusing on their ecological roles, chemical compounds, and potential medicinal properties.