This is a monotypic genus. A reference to the genus is listed below.
* Samuels, G. J., J. D. Rogers, and E. Nagasawa. 1987. Studies in the Amphisphaeriaceae (sensu lato). 1. Collodiscula japonica and its anamorph, Acanthodochium collodisculae. Mycotaxon 28: 453-459.

This genus has the following characteristics:

stromatal tissue quantity: distributed above, around, and beneath perithecia
stromatal layers: unipartite
stromatal surface level: erumpent or superficial
stromatal interior: essentially homogeneous
stromatal orange granules surrounding perithecia: absent
stromatal KOH pigments: absent
stromatal conidium-bearing discs: absent
stromatal bases: sessile and attached to substrate entirely
stromatal aggregation: not forming a crust
stromatal shapes: other than wiry
coremial pegs or remnants: absent
subiculum: absent
substrates: associated with substrates other than dung or insect nests
ascomatal number per stroma: mostly uniperitheciate
ascomatal ostioles: present
ascomatal configurations: not valsoid
ascomatal orientation: mostly oriented vertically
ascal apical rings: present
ascus height vs width: usually higher than wide
ascospore cell number: two-celled
ascospore shapes: other than cuboid
ascospore color: colored
ascospore ornamentation: striated
ascospore germination site morphology: absent
perispore dehiscence: indehiscent
anamorphs: Geniculosporium-like
cultural gross morphology on oatmeal agar: not highly furrowed or distorted