Thallus erect, rigid, (1-)5-10(-12) cm tall, sparingly to moderately branched from an open broad base, holdfast prominent. Branches flattened, ± lanceolate, plane or canaliculate, width variable, 1-20 mm wide, commonly 3-10 mm wide, smooth or uneven, undulate, plicate or ridged, pale greenish- grey to pale stramineous or fawn-grey, young branches thin, ± smooth and even, older branches longitudinally ribbed-striate or reticulately ridged from subcorticular strands of cartilaginous strengthening tissue, often lacerate-cracked or fenestrate, pseudocy-phellae common and often prominent, white, shortly linear to irregular, cortex sometimes eroding to reveal ± clathrate arrangement of subcortical cartilaginous strands, margins sinuous, entire, slightly thickened, apices narrow, entire to broad and ± ragged, in well-developed thalli small lobules or adventitious thalli growing from lamina, soralia absent. Apothecia numerous, marginal in young thalli, then laminal in older thalli, pedicellate, 0.2-0.5 mm diam., deeply cupuliform when young with a thin margin, becoming plane when convex and ± immarginate with age, disc flat or convex, sometimes papillate, white- or pinkish-pruinose, thalline exciple smooth at first, becoming coarsely wrinkled scabrid, glossy. Ascospores straight, apices rounded or acute, 10-16 × 4-7 µm. Chemistry: No medullary substances.