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Stereocaulon vesuvianum Pers. var. vesuvianum

Synonyms:

Family: STEREOCAULACEAE

Habitat: Ubiquitous

Description

    Primary thallus minutely squamulose, soon disappearing, pale grey-greenish, secondary thallus composed of branches (pseudopodetia)  forming compact tufts, 1-4 cm tall, more or less erect or branched, section circular, pale pink-orange, covered with warts (phyllocladia) producing a coralloid aspect or shield-like, center of phyllocladia dark grey-greenish with a paler margin, pseudopodetia apices sometimes topped off globose piles of soredia, grey-yellowish, hardly ever brown-olive to blackish cephalodia present. Apothecia very rare, dark brown, flat to convex, 0.5-1 mm diam., on lateral branches. Ascospores markedly elongate, colourless, 3-5-septate,  25-35 x 3-4 µm. Paraphyses with thick brown tip. Photobiont: Trebouxioid.  C-, K+ yellow, occasionally K+ red, KC- , Pd+ orange. Rare, on more or less acid rocks, usually iron-rich, and also on top of walls within mosses.*







Stereocaulon vesuvianum Monthermé 1
Jacques HAINE



Stereocaulon vesuvianum Monthermé 2
Jacques HAINE



Stereocaulon vesuvianum Monthermé 3
Jacques HAINE



Stereocaulon vesuvianum Clohars-Carnoët
Alain GERAULT



Stereocaulon vesuvianum Sur schiste ardoisier riche en fer Commana 1
Bernard BOUFFINIER



Stereocaulon vesuvianum Sur schiste ardoisier riche en fer Commana 2
Bernard BOUFFINIER



Stereocaulon vesuvianum Sur schiste ardoisier riche en fer Commana 3
Bernard BOUFFINIER



Stereocaulon vesuvianum Sur schiste ardoisier riche en fer Commana 4
Bernard BOUFFINIER



Stereocaulon vesuvianum Apothécies Monthermé 4
Jacques HAINE



Stereocaulon vesuvianum Asques Lugol Monthermé 5
Jacques HAINE



Stereocaulon vesuvianum Spores Monthermé 5
Jacques HAINE



Stereocaulon vesuvianum Groix 1
Hans TOETENEL



Stereocaulon vesuvianum Groix 2
Hans TOETENEL



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