Thallus
Fruticose, rarely exceeding 5 cm, erect, bushy, with more or less round straps, sometimes hidden by apothecia
Color
Grey-green more or less pale
Reproduction
Apothecia: frequent, with a concave disc of the same color as the thallus, located at the end of the strips
Soralia: —
Isidia: —
Substrate
On bark, very rarely on rock
Habitat
On trees with rich bark, along roadsides and parks
Sensitivity to air pollution
Sensitive to pollution