In the protologue, Nylander compared this species to Pertusaria leioplaca, noting its distinct rose-pink to rosy-scarlet ostioles, which are small and either slightly or barely sunken into the apothecia (fruiting bodies).

Nylander described it based on specimens collected by Wilhelm Lindig in Villeta, Colombia, at an elevation of 1,100 metres, where it was found growing on tree bark.

This designation reflects the lack of information regarding its population size, ecological characteristics, habitat preferences, and potential threats.

[1] No specific data exists on the population dynamics or abundance of P. rhodostoma, partly due to its clonal growth and the absence of detailed ecological studies.

To better understand and protect this species, researchers recommend taxonomic reevaluation, studies of its life history and ecology, and surveys to identify additional localities and characterise its habitat requirements.