Herpothallon rubrocinctum, 15 April 2023

Herpothallon rubrocinctum, the Christmas lichen;
Volusia county, Florida (15 April 2023).

Though far from being uncommon, I always delight when I come across a nice patch of Christmas lichen. I have no idea why Christmas lichen adapted its red-and-white patterning (biochemistry aside), but it sure makes for an interesting accent on whatever tree it may be growing upon.

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