Treoniales

Treoniales is a taxonomic term that has appeared in some mycological literature as the name of an order. In historical classifications, it was used by certain authors to group a set of fungi sharing particular morphological features. However, the circumscription of Treoniales varied between sources, and there was no broad consensus on which genera belonged to it.

With the rise of molecular phylogenetics and modern fungal taxonomy, the concept of Treoniales as a natural, well-defined lineage was questioned. As a result, Treoniales is not consistently recognized as a valid order in current classifications. In many contemporary treatments, the name is treated as historic or obsolete, and the genera once associated with it are distributed among other, better-supported orders.

Because of its uncertain status, Treoniales is primarily of historical interest within the study of fungal taxonomy. The name serves as an example of how taxonomic concepts have evolved in light of genetic data, rather than as a currently accepted clade or rank.

In practice, contemporary references and databases such as major fungal taxonomic resources emphasize orders that are supported by molecular phylogeny. Treoniales serves mainly as a note in the history of taxonomy, illustrating shifts in how fungi are organized as scientific methods advance.

See also: List of fungal orders; Taxonomy of fungi. References to Treoniales are typically found in historical classifications and discussions of nomenclatural changes in mycology.