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Cladonia grayi  Cf. G. Merr. ex Sandst. 

Synonyms:

Family: CLADONIACEAE

Habitat: Ubiquitous

Description

    Primary thallus made of small squamules, up to 5 mm high, slightly incised, green-blue, podetia cup-shaped, with sometimes minute squamules at the basis, 1-2.5 mm high, covered with finely verrucose soredia inside and out, margin purple to violet, possibly extending to the whole scyphus. Apothecia brown, more or less stipitate, at scyphus margin as well as brown pycnidia. Thallus : C-, K-, KC-, Pd- or Pd+/- red, UV+ blue-whitish. Rare (?), on sandy soils of very acid heathlands enriched in ligneous debris and sometimes on dunes. This species belongs to a complex of several taxa and our presentation is done with the usual restrictions since the current knowledge makes difficult to clearly discriminate our specimen from the others. It is also difficult to distinguish from other close species; the main distinctive hallmarks are summurized as follows:

_ Cladonia chlorophaea : Scyphus indented and soredia minutely granular;

_ Cladonia grayi complex : Scyphus with soredia verrucose and margin purple to violet;

_ Cladonia pyxidata : Scyphus covered with squamules-like granules notably inside the cup.*







Cladonia grayi Cf. Pointe du Guern 1
Bernard BOUFFINIER



Cladonia grayi Cf. Ménez-Hom
Bernard BOUFFINIER



Cladonia grayi Cf. Ménez-Hom 2
Bernard BOUFFINIER



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