Cladonia parasitica (Hoffm.) Hoffm.
Primary thallus made of squamules 1-2.5 mm long and 0.5-1 mm wide, margin incised, upper surface greenish, green-yellow, green-brown, often coarsely granular sorediate, forming crowded, compact, ± continuous spreading mat-like swards, possibly masking the squamules, pale green when moist, lower surface paler. Podetia rare, scattered, up to 3-15 mm tall, rather rare, sorediate, without scyphi, apothecia at the tips of podetia. Apothecia rare, globular, brown-pink, forming small spherical clusters (glomerules), 1-1.5 mmm diam. Ascospores fusiform, 7-14 x 2,5-3,5 µm. Pycnidia abundant, clarly visible as black dots. Photobiont : trebouxioide. Thallus C-, K + yellow, KC± , Pd+ gold-yellow to orange. On ± decaying, decorticated wood of branches, trunks, stumps and logs especially of coniferous and deciduous trees in older woodland, sometimes directly on soil compost. Not to be confused with Cladonia incrassata of which the apothecia are red and very small, and devoid of pycnidia.*