ITALIC 7.0

Gyalectidium setiferum Vězda & Sérus.

in Sérusiaux, Nordic J. Bot., 13, 4: 454, 1993

Synonyms:

Distribution:

Description: Thallus crustose, episubstratic, membranous with a granular surface, grey-white when dry, greenish when wet, becoming snow-white by crystals of calcium oxalates when drying in a herbarium, forming rounded, oval or irregular, 0.2-0.3 mm wide patches merging into 1-4 mm wide aggregates delimited by a pale prothallus. Surface with scattered, sterile setae that resemble those of the hyphophores; hyphophores laminal, their scales completely divided into a circle of 2-6, vertically oriented, 0.3-0.5 mm long, tapering cilia which are translucid to whitish, but often darkened at tips, and surround a greenish to rarely yellowish brown, distinctly prominent diahyphal mass formed of conidia-forming, moniliform hyphae strongly constricted at septa, and of spherical green algal cells. Apothecia and pycnidia unknown. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on leaves of evergreen shrubs and juvenile trees (e.g. Buxus, Abies) in the understory of very humid forests; widespread and apparently spreading in Europe from Brittany in Western France to the Western Caucasus, with a few records from the Western Alps (France). To be looked for in Italy.

Growth form: Crustose

Substrata: leaves

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by conidia and thalloconidia

Restricted to humid-warm, oceanic areas

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model

Index Fungorum GBIF

Robert Lücking

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=875&lang=en

France, Huelgoat, on Abies