Bacidia depriestiana is a sorediate crustose lichen that grows on the bark of Quercus alba along forested streambanks on steep slopes in the Southern Appalachian Mountains in the United States.

[1] Bacidia depriestiana has a yellowish-grey thallus, broken up into minute areoles that are often topped are topped irregular balls of grainy blue-gray soredia.

[1] Since it reproduces asexually, chemistry is important for identifying it; it produces zeorin and atranorin.

[1] The species epithet, depriestiana, honors Paula DePriest, for her research contributions to Appalachian lichen biodiversity knowledge.

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