For a detailed description, see
Clerc & Herrera-Campos (1997) and
Clerc (2007). Thallus shrubby to subpendant, 2–15 cm; base pale, without distinct annular cracks; secondary branches slightly to distinctly constricted at their point of attachment; fibrils present, occasionally numerous, spinulous; papillae absent on all branches; soralia punctiform to slightly elliptic longitudinally (especially on terminal branches), with isidiomorphs. Cortex glossy, thin; medulla thick, dense to compact.