Phaeographis lyellii (Sm.) Zahlbr.
Leiorreuma lyellii (Sm.) Staiger
Thallus crustose, thin, bark colour potentially visible through, more or less smooth, glossy, frosted, greenish, olivaceous, brown-olive. Apothecia lirellate, markedly open, rather short and wide, flat or slightly prominent, flexuose, simple or seldom branched or stellate, typically surrounded by a conspicuous wide exciple, powdery, whitish. Ascospores fusiform, caterpillar-like, elongate, (3)-4-5-(7)-septate, brown or gray when mature, 22-35 x 7-9 µm according to the literature, (20) 22-35 (40) x (5) 7-8 (9) and (3) 5-7 (8) septate according to our measurements. Chemical spot tests negative. Oceanic trends, on shaded smooth barks of trees in humid woodlands. Easy to recognize by its apothecia in broad lirella surrounded by whitish and visible from afar. See Phaeographis dendritica with a whitish K + red thallus.