Cladonia foliacea morph. foliacea = Cladonia foliacea (Huds.) Willd. subsp. foliacea

    Primary thallus composed of squamules, up to 0.5-2 cm tall, recurved, indented and incised apices, with dark-brown to black marginal hairs forming tufts, upper surface grey-yellowish, green-yellowish, lower surface pale yellow (whatever the moisture level). Podetia up to 5-10 mm tall, understated and hardly visible, regular, smooth, gradually flared from the base. Apothecia brown, on top of scyphi. Pycnidia frequent, dark-brown. Asci 37-50 x 9-11 µm, with a large I+ apex. Ascospores fili-fusiform, 10-15 x 3-5 µm. Photobiont: Trebouxioid. C-, K-, KC+ yellow, Pd+ orange to red. Coastal trends in our prospection area, on sandy acidic soils near rocks or in their crevices.

_ In case of calcareous soils and lower surface markedly white without yellow tinge, K+ yellow > red, see Cladonia symphycarpia; Cladonia subcervicornis is K+ yellow and has thicker squamules whereas  Cladonia firma  is also K+ yellow but grey-violet.