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Lecanora conizaeoides  Nyl. ex Crombie

Synonyms:

Family: LECANORACEAE

Habitat: Ubiquitous

Description

    Thallus crustose, 5-10 cm across, coarsely granular, more or less cracked, slightly powdery, composed of large granules more or less covered with soredia, green-greyish, green-yellowish when moist, greyish tinged green when dry. Apothecia scattered all over the thallus, more or less protruding, 0.5-1 mm diam., disc greenish tinged pink, pale green-ochraceous when moist, pale brown, pale leather-brown when dry, exciple large and thick, irregularly flexuous, crenulate to granular, concolourous to the thallus. Ascospores simple, very broadly ellipsoid, 8-14 x 5-8 µm. Photobiont: Trebouxia. Thallus: C-, K- or seldom pale yellow, Pd+ yellow > rusty, UV+ orange. On nutrient-rich and various acidic substrates, formerly abundant within cities on any kind of acidic substrates due to the high concentration in sulphur dioxide. Rarer since the improvement of air quality in cities and mostly restricted to barks (or wood) of worked conifer timber (Pinus). N.B. The sorediate form is the most frequent (= Lecanora conizaeoides morpho. conizaeoides) but a more scarce form without soredia, Lecanora conizaeoides morpho. variola  growing mainly on bark of isolated Pinus may be found. In fact, all intermediate forms may be found. See also Lecanora strobilina of which teh thallus is less granulose and Pd-. N.B. Sometimes, the host of Athelia arachnoidea.







Lecanora conizaeoides Crozon 1
Bernard BOUFFINIER



Lecanora conizaeoides Crozon 2
Bernard BOUFFINIER



Lecanora conizaeoides Han sur Lesse
Jacques HAINE



Lecanora conizaeoides Han
Jacques HAINE



Lecanora conizaeoides Han sur Lesse 3
Jacques HAINE



Lecanora conizaeoides Han sur Lesse 4
Jacques HAINE



Lecanora conizaeoides Han sur Lesse 5
Jacques HAINE



Lecanora conizaeoides Réaction au P Han sur Lesse 6
Jacques HAINE



Lecanora conizaeoides Han sur Lesse Réaction au P 7
Jacques HAINE



Lecanora conizaeoides Asques Lugol Han sur Lesse 8
Jacques HAINE



Lecanora conizaeoides Asque Rouge Congo Han sur Lesse 9
Jacques HAINE



Lecanora conizaeoides Asque Bleu Coton Han sur Lesse 10
Jacques HAINE



Lecanora conizaeoides Spores Rouge Congo Han sur Lesse 11
Jacques HAINE



Lecanora conizaeoides Spores Melzer Han sur Lesse 12
Jacques HAINE



Lecanora conizaeoides Menez Meur 1
Bernard BOUFFINIER



Lecanora conizaeoides Menez Meur 2
Bernard BOUFFINIER



Lecanora conizaeoides Menez Meur 3
Bernard BOUFFINIER



Lecanora conizaeoides Menez Meur 4
Bernard BOUFFINIER



Lecanora conizaeoides Menez Meur 5
Bernard BOUFFINIER



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