Mycoglaena myricae (Nyl.) R.C. Harris

Michigan Bot., 12, 1: 29, 1973. Basionym: Verrucaria myricae Nyl. - Flora, 52, 19: 297, 1869.
Synonyms:
Distribution:
Description: Thallus inapparent, probably not lichenized. Perithecia broadly ellipsoid in outline, 0.2-0.5 x 0.1-0.3 mm, flattened at top, dark green, often with a thin whitish border. Involucrellum bright green to greenih black (in water mounts), K-, N+ red, composed of dark hyphae mixed with bark cells; exciple greenish, poorly developed; hamathecium of up to 1 µm thick, simple or sparingly branched and anastomosing paraphyses, the hymenial gel I-. Asci 8-spored, cylindrical, with a more or less truncate apex, K/I-, the apex usually thickened internally but without an ocular chamber, (50-)80-95 x (10-)17-20 µm. Ascospores 3-septate, constricted at septa, the median cell usually larger than the others, hyaline, fusiform with pointed ends, (16-)18-23 x (4.5-)6-8 µm, without a gelatinous perispore. Pycnidia resembing perithecia but much smaller, 40-60 µm in diam. Conidia bacilliform, 4.5-5(-5.7) x c. 0.8 µm. Photobiont absent. Spot tests: all negative. Chemistry: without lichen substances.
Note: a non-lichenized, saprophytic fungus usually collected by lichenologists, growing on the smooth bark of deciduous trees and shrubs. To be looked for in Italy.
Growth form: Fungus
Substrata: bark
Reproductive strategy: mainly sexual
Pioneer species

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Alain Gerault - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=331&lang=en
France, Argol


Source: Harris R.C. (1973) The corticolous pyrenolichens of the Great Lakes region. Michigan Bot. 12: 3-68.