Hyaliiniales

Hyaliiniales is an order of fungi belonging to the class Sordariomycetes. These fungi are characterized by their hyaline, meaning clear or transparent, conidia (asexual spores). The order was established by mycologist E. M. Fries in 1821 and has since undergone several taxonomic revisions. Species within Hyaliiniales are often found in terrestrial environments, inhabiting soil, decaying plant matter, and sometimes living plants. They play roles in decomposition and nutrient cycling within their ecosystems.

The morphology of Hyaliiniales fungi can vary, but many exhibit simple, often unicellular or multicellular, conidia that are produced in various ways, including blastically or annellidically. The teleomorphic (sexual) stages, when present, are typically perithecial, meaning they are enclosed within a flask-shaped fruiting body. However, many species are known primarily from their asexual states, making their classification challenging. Molecular phylogenetic studies have been instrumental in clarifying the relationships within this order and its placement within Sordariomycetes. Research on Hyaliiniales continues to explore their biodiversity, ecological significance, and potential biotechnological applications.