Genus Malmographina is characterised by its smooth, olive-green thallus, erumpent to prominent lirellae (fruiting bodies) with orange to cinnabar-red pigment, a clear hymenium, and hyaline, non-amyloid ascospores.

[5] The genus Malmographina is characterised by its smooth, olive-green thallus, erumpent to prominent lirellae (fruiting bodies) with orange to cinnabar-red pigment, a clear hymenium, and hyaline, non-amyloid ascospores.

The type species, Malmographina plicosa, shows unique features that support its placement in a separate genus, including the absence of lichen substances in the thallus, the presence of anthraquinones in the lirellae, and the distinctive morphology of its ascomata and ascospores.

The disc of the apothecia is hidden, and the excipulum (the outer rim of the apothecium) is distinctly scalloped and ranges in colour from orange-brown to dark brown or carbonised in the inner parts.

Its known range includes Suriname, where the type specimen of Opegrapha plicosa was collected, and various locations in the Peruvian Amazonia, particularly in the Department of Madre de Dios.