Notable for its small ascospores, this lichen thrives in undisturbed rainforests and serves as an indicator of forest health.

[2] Initially, the newly discovered species was identified as Anomomorpha aggregans due to its small ascospores and norstictic acid chemistry.

However, further examination and DNA sequencing of a Florida collection revealed a lack of hymenial inspersion, a key character in Anomomorpha.

[2] Diorygma microsporum shares some similarities with D. poitaei in appearance; however, it is distinguished by its smaller ascospores and the presence of norstictic acid in its thallus.

[4] This lichen species is typically found on tree trunks in the shady understory of undisturbed lowland and lower montane rainforests, making it a bioindicator of forest health.