[1] Allelochaeta was considered as a synonym of Diploceras, one of the five groups of fungi into which the Seimatosporium complex was split by Nag Raj (in 1993).
Members of this genus are characterized by mostly 3-septate, hyaline or pigmented, concolorous or versicolorous conidia, having branched or solitary, cellular or continuous appendages (Crous et al.
[2] Crous et al. (2018a) discussed the conidial septation, appendage types and pigmentation loss and gain during the evolution of Allelochaeta species.
[6] In 2018, the appendaged coelomycete genus of Seimatosporium (Sporocadaceae, Sordariomycetes) and some of its purported synonyms Allelochaeta, Diploceras and Vermisporium are re-evaluated.
Allelochaeta was found to include taxa with both branched or solitary appendages, that could be cellular or continuous, with conidia being (2-)3(-5)-septate, hyaline, or pigmented, concolorous or versicolorous.