For a detailed description, see Clerc (1992, 2007)
and Herrera-Campos et al. (1998)
. Thallus erect, subpendant to pendant, up to 25 cm long, stiff; base pale or red-brown pigmented; branches even in thickness, slendering evenly towards the apices, not constricted at the point of attachment; fibrils usually absent, occassionally scarce, rarely numerous; papillae absent or present, verrucous; soralia present, punctiform to somewhat enlarged (less than half width of the branch bearing them), mainly on small branches and the apices; isidiomorphs absent to abundant (on young soralia). Cortex very thick (9–17%), characteristically shiny; medulla thin, compact.