Amphisphaeria

Amphisphaeria is a genus of fungi in the family Amphisphaeriaceae. The genus was described in 1863 by mycologist Joseph Erlanson. Fungi in this genus are typically found on dead or decaying plant material, particularly wood and stems. They are characterized by their ostiolate ascomata, which are flask-shaped or globose structures containing the asci and ascospores. The ascospores are usually dark-colored and may be septate.

Species within Amphisphaeria have been reported from various parts of the world. Their ecological role is primarily that of saprotrophs, contributing to the decomposition of organic matter. While some species may be of interest to mycologists for taxonomic or phylogenetic studies, Amphisphaeria is not generally known for causing significant plant diseases or having any direct economic importance. Further research is ongoing to clarify the taxonomy and evolutionary relationships of the species within this genus, as is common for many fungal groups. The precise number of accepted species can vary as new research emerges and classifications are updated.