Thallus decumbent, straggling, rarely fruticose or subpendulous, 10-15 cm long, soft, flaccid when moist, yellowish-green or yellowish-white, smooth and shining, matt, repeatedly dichotomously branching, terricolous. Branches divergent, irregularly curved, 1 mm wide, abruptly attenuate at apices, irregularly jointed, primary branches ± inflated or articulate at branch points, terete, slightly faveolate-impressed in basal parts, smooth, glabrous, occasionally indistinctly papillate, secondary branches rather few, without tubercles, isidia, soredia or spinules. Apothecia not seen. Chemistry: Fumarprotocetraric, protocetraric and usnic acids.