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Ptychographa xylographoides is a script ...
Thallus no more than 1 cm in diameter, whitish; with a
The cropped image shows a white thallus with the contrasting black apothecia.
Graphis scripta is a crustose lichen in the ...
Grey thallus with irregular black apothecia scattered. Usually with a black ...
Pencil Script grows on hardwood. It is one ...
White-gray thallus, black splotches.
Graphis scripta is a crustose lichen in the ...
Small patch of crustose lichen surrounded ...
Crustose lichen. Very variable. It has a ...