Bryoria bicolor  

Thallus to 4 (-10) cm, erect, rarely decumbent, forming densely branched, dark cushions; branches 0.2-0.7 mm diam., terete, occasionally compressed towards base; branching isotomic- to anisotomic-dichotomous; basal branches black or brownish black, the apices olive-grey to pale brown, shiny, blunt; lateral spinules 1.5-5 mm, numerous, with constricted bases, arising at right angles from main stems, often bow-like, usually simple; pseudocyphellae absent; soralia absent; soredia occasionally present at ends of broken branches.
Anamorph: unknown.
Teleomorph: apothecia unknown in British material.
Chemistry: medulla C–, K–, KC–, Pd+ red (often patchy) (fumarprotocetraric acid).