Day 107: What do you suppose has inspired Graphis scripta to leave its unique graffiti on the alder trees along my favourite trail in the Cowlitz Wildlife Area near Mossyrock Dam? Truly the Banksy of the lichen population, these elegant, raised markings are in fact the reproductive structures of the crustose species. They are called lirellae, and if you look closely, you will see that they are split longitudinally, as if scripta's pencil held two adjacent leads. The thallus (body) of the lichen is a thin, greyish-white crust which frequently coats the bark of Red Alder (Alnus rubra) to the extent that the natural colour which gives the tree its name is no longer visible. But science aside, what is scripta writing about? What is it illustrating? I see a little chick just below and slightly left of center, as well as the initial E canted in italics near the lower left edge. You could get lost trying to decipher scripta's code!
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