Lecidella elaeochroma chemo euphorea
Fairly common thermophilic taxon characterized by its greyish, grey-greenish thallus and the chemical reactions of its thallus: C-, K+ yellow or K+/- yellow, KC-, P-. Spores according to our measurements: 10-15 x 7-9 µm. On bark or deciduous or coniferous wood in hot, sunny areas.
N.B. It seems that all transitional forms are possible with chemo elaeochroma.