Ecology: Terricolous; growing sun-exposed or partially shaded; substrate non-calciferous. Thallus: Branches caespitose. Primary Thallus: Evanescent. Secondary Thallus: Present, of indeterminate growth; stipe 40-100 mm high, 2-8 mm wide, lime green, homogeneously coloured, corticate, with longitudinally split or perforated (repeatedly) wall, 200-400 µm thick. Upper Surface: Smooth, byssoid (fibrous). Reproduction Strategy: Only known as sterile, asexually reproducing form. Secondary Metabolites: Psoromic acid and usnic acid, of the following substance class(es): ß-orcinol depsidones. Spot Tests: Upper surface: K – (negative), C –, + deep yellow, or + orange, PD + yellow (at tips of branches).