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foliose lichen, on bright exposed dogwood bark along canal (Piscidia piscipula)
THALLUS: light greenish gray, not spotted, lobes confluent w/ fan-shaped tips, flat to v subtly convex and wrinkled, closely appressed, to 1.5 mm wide, black and smooth below (no rhizines), no soredia
MEDULLA: white
APOTHECIA: abundant, 0.8 mm wide, lecanorine, black w/ striking purple pruina, raised smooth whitened rim

Check out that pruina! Not something you see every day…

Species Lists


darker one on the right is Physcia neogaea, lighter more closely-appressed one on left is Dirinaria purpurascens
close-up of pruina on apothecia, at 30x

Proposed Names

87% (1)
Recognized by sight: purple pruina!!

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= Observer’s choice
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