Identification key
Pleurosticta acetabulum
(1) Pleurosticta acetabulum
Description
Thallus
Foliose, up to 25 cm, with wide lobes (15  mm), rounded and widened towards the ends, covered with abundant black pycnidia towards the end of the lobes

Color
Dark brown-green when dry, green when wet
Reproduction
Apothecia: frequent, large (up to 1.5 mm in diameter), brownish disc, raised edges often misshapen
Soralia: absence
Isidia: absence
Risk of confusion
None
Ecology
Substrate
On bark, rarely on artificial substrate

Habitat
Heliophilous and nitrogen-tolerant

Occurrence
Common

Sensitivity to air pollution
Sensitive to acid pollution

(2)