Ecology: Terricolous or lignicolous. Thallus: Crustose, squamulose; lobes ascending; branches densely aggregated, scattered, loosely aggregated, or clustered; separate thallus parts 2-6.5 mm long; 1 mm wide. Primary Thallus: Evanescent or persistent. Secondary Thallus: Present, arising from center of the primary thallus or arising from edge of the primary thallus, of determinate growth; stipe 20-80 mm high, 1-2 mm wide, lime green, homogeneously coloured, corticate or not corticate (only on basal area), with intact wall. Thallus Outline: Margin crenulate or dissected. Upper Surface: Lime green; sorediate; soralia peripheral, soredia farinose or coarse. Lower Surface: White or yellow; sorediate. Lower Cortex: Absent. Ascocarps: Forming apical at the tip of branches or stipes, sparse. Disk: Strongly convex; brown or brownish yellow. Conidiomata: Formed on podetia. Secondary Metabolites: Barbatic acid and usnic acid, of the following substance class(es): ß-orcinol depsides. Spot Tests: Upper surface: K (negative), C , PD .