[1] It is known to occur only in Boulder, Colorado, where it grows in association with other lichens in mixed saxicolous communities on sandstone in the Fox Hills Formation.

The lichen is characterized by its thick white, chalky thallus, sessile to raised apothecia, presence of a dark pink pigment in the hymenium, and absence of secondary compounds.

[2] Lecidea hoganii has a crustose, epilithic thallus that is conspicuously raised above the substrate, forming rosettes up to 7 cm (2.8 in) in diameter and 0.6 mm thick.

It occurs in mixed saxicolous communities growing in close association with other lichens such as Caloplaca decipiens, Lecidella carpathica, L. patavina, and Rinodina strausii.

The authors suggest that this species merits ranking under the IUCN Red List as Critically Endangered due to its restricted geographical range, the single known extant population, and the small number of individuals known (less than 50).