scab
Bluelighter
I realise I'm helpful to precisely no-one when I say this is an absolutely fascinating thread.
Please elaborate.
IIRC lichens are two organisms - an algae and a fungi - living in a symbiotic relationship.
So it might not be so surprising for the fungal component of lichens to contain psychoactive compounds similar to those found in your everyday common-or-garden mushies.
I wonder how many undiscovered psychoactives are yet to be stumbled across!
Wow...this could be really really big.
Hopefully one day it will be uncovered.