looking for fluorescence on a rock I came across this..

[fuss]

...Lichen I suppose, attached to a rock I was checking for fluorescent minerals. May have found a new hobby, fluorescent Lichen hunting..

 

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[Kray Gelder]

That's cool!

 

[Jim in Idaho]

In Wyoming I've seen them in scarlet red, too...just gorgeous under the UV light. Tons of the orange lichens in western Wyoming, too.
Jim