Alectoria ochroleuca  

Thallus to 8(-12) cm, erect or becoming sprawling; branching moderate, ± anisotomic-dichotomous; branches 0.5-2 mm diam., the main stems terete, never strongly compressed, yellowish green to bright yellow, the apices often black or greenish black, ± matt. Pseudocyphellae ca 1 × 0.1 mm, abundant, elliptical, white.
Anamorph: pycnidia frequent, to 150 μm diam., ± apical, black.
Teleomorph: apothecia unknown in the British Isles.
Chemistry: medulla C–, CK+ yellow, K–, KC–, Pd–, UV– (diffractaic acid); cortex KC+ pale yellow (usnic acid).