Thallus Corticolous, 8 – 10 cm long, moderately branched, growing from a narrow holdfast. Branches solid, 1 – 4 (- 10) mm wide, dorsiventral, weakly canaliculated, surface smooth or more or less longitudinally and irregularly ridged, tips of branches often up-turned with farinose to granular soralia. Soralia subterminal or laminal, mainly on the lower surface of branches, ellipsoid, irregularly spreading, more or less distinctly inflated, forming ventricose soralia. Pseudocyphellae linear to narrowly ellipsoid, laminal or marginal, slightly depressed. Thallus 150 – 300 (- 600) µm thick; cortex indistinct; chondroid tissue continuous or dissected by pseudocyphellae, never cracked. Apothecia common, stipitate, submarginal or laminal; disc concave in young apothecia, flat to more or less convex in older ones; margine entire; thalloid exciple smooth, without spurs or pseudocyphellae; hymenium 55 – 60 µm thick; hypothecium 25 – 30 µm thick; proper exciple, 50 – 90 µm thick; ascospore long fusiform, 12 – 16 x 3 – 4 µm.

Photobiont:

Chemistry: Usnic acid, boninic acid, 2'-0-methylsekikaic acid, and 4'-0-methylpaludosic acid.

Ecology: