Caloplaca cerina forme vert-livide.
Form of colorations: lime green, yellowish-green, green, livid-green coming on the barks in the shade, margin concolorous to the thallus (whitish) and not greyish. It is linked by intermediaries to the ochre-orange forms of the sunnier areas.
N.B. Sometimes misleading form which can be searched by mistake in another genus if the reaction to KOH is not practiced!