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Project Noah Nature School
Crustose lichen. Very variable. Smooth or slightly granular, light-grey to ...
Crustaceous lichen. Thallus a grey-white to pale-grey-green, cracked crust, ...
Crustaceous lichen. Thallus a grey-white to pale-grey-green, cracked crust, ...
Looking like white paint splattered over rocks lust above high tide mark, this ...
A yellowy grey or pale grey-green lichen with a cracked crust and studded with ...
