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Fuscidea lightfootii  (Sm.) Coppins & James

Synonyms:

Family: FUSCIDEACEAE

Habitat: Ubiquitous

Description

    Thallus crustose, 1-3 cm diam., made of convex areoles, to 0.2-0.3 mm, granular, finely to coarsely verrucose-areolate, occasionally ± papillate, grey-greenish, bright olive to dull grey-green or suffused brownish in places, usually sorediate with granular soralia pale, green-yellowish notably towards margin, prothallus pale or whitish. Apothecia frequent, 0.5-1 mm diam., disc flat to slightly convex, brown-blackish to blackish, margin uneven, flexuose or lobate, concolourous or paler, somehow crenelated or sometime fluted. Ascospores simple, colourless, broadly ellipsoid, crowded towards the center, with obtuse ends (dumb-bell shape), 8-11 x 3.5-4.5 µm. Photobiont: Trebouxioide. Chemical spot tests negative but UV+ blue-whitish. Grows on horizontal twigs of Salix and Fraxinus in wet lands. See Lecidella elaeochroma very common species with a less granular thallus and C+ orange.*







Fuscidea lightfootii Commana 1
Bernard BOUFFINIER



Fuscidea lightfootii Le Faou 1
Bernard BOUFFINIER



Fuscidea lightfootii Commana 2
Bernard BOUFFINIER



Fuscidea lightfootii Commana 3
Bernard BOUFFINIER



Fuscidea lightfootii Le Faou 2
Bernard BOUFFINIER



Fuscidea lightfootii Le Faou 3
Bernard BOUFFINIER



Fuscidea lightfootii Le Faou 4
Bernard BOUFFINIER



Fuscidea lightfootii Asques Bleu de crésyl
Jacques HAINE



Fuscidea lightfootii Spores Bleu de crésyl
Jacques HAINE



Fuscidea lightfootii Apothécies Bayeux 1
Jacques HAINE



Fuscidea lightfootii Apothécie Bayeux 2
Jacques HAINE



Fuscidea lightfootii Coupe Apothécie Eau Bayeux 3
Jacques HAINE



Fuscidea lightfootii Asque eau Bayeux 4
Jacques HAINE



Fuscidea lightfootii Asque Lugol Bayeux 5
Jacques HAINE



Fuscidea lightfootii Spores eau Bayeux 6
Jacques HAINE



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