Thallus rather delicate, shrubby, ± fruticose or decumbent-straggling, 1-2.5 (rarely to 4) cm long, blackened at base, pale greenish-yellow, sparsely branched, 1-3-branched at base. Branches 1 mm thick at base tapering towards apices, terete, distinctly papillate, articulate-cracked, fibrils or secondary branches at right angles to main, inflated primary branches sparse to moderate, occasionally dense, matt or shining, waxy, lacking isidia, pseudocyphellae, soredia or spinules. Apothecia moderate to frequent, subterminal, geniculate, disc concave to plane, 1.5-2 mm wide, disc white-pruinose, margins with ray-like branchlets, exciple smooth, matt or slightly faveolate-wrinkled. Ascospores 9 × 5-6 µm. Chemistry: Usnic acid.