Candelaria concolor  

Thallus typically forming small, discrete suborbicular cushions <1 cm across, often becoming irregularly more wide-spreading, coalescing or in scattered fragments, ± closely appressed. Lobes flattened, finely divided, c. 1 mm long, 0.1-0.5 mm wide, surface flat or ± wavy, occasionally somewhat raised and fan-like, the margins distinctly crenulate, ± overlapping, entire, or becoming isidiate-granular or coarsely sorediate, bright yellowish green to chrome yellow above, almost white beneath. Rhizines scattered, simple, white.

Anamorph: conidiomata pycnidial. Pycnidia c. 100 µm diam., rare. Conidia 1.8-2.7 × 1 µm.

Teleomorph: ascomata apothecial. Apothecia 0.4-1 mm diam., rare. Disc dull greenish-orange or pale brownish-yellow. Thalline exciple smooth, becoming ± uneven-granular with age, concolorous. Ascospores 6-14 × 4-6 µm, biguttulate.

Chemistry: thallus C–, K–, KC–, Pd–, UV–.