ITALIC 8.0

Leptogium hibernicum M.E. Mitch. ex P.M. Jørg

Herzogia, 2: 462, 1973.

Synonyms:

Distribution:

Description: Thallus foliose, broad-lobed, markedly gelatinous and 390-480 µm thick when wet, up to 5(-7) cm in diam., the lobes ear-shaped, flat to concave, separate, (5-)8-10(-15) mm widewith rotund, entire to irregularly dissected, often upturned apices, the margins sometimes small-lobulate. Upper surface dark bluish grey, sometimes with a brownish hue, usually dull, striate-wrinkled, the striations often running in parallel lines, patchily covered in coarse, granular to subcylindrical, rarely flattened isidia. Lower surface pale to medium brown, but appearing whitish-pruinose, being covered in a dense white tomentum of short-cylindrical, 17-30 μm long hairs with globose, 4-6.5 μm wide cells. Upper and lower cortex consisting of a single layer of irregularly isodiametrical cells, those of the upper cortex 4-7 x 4-6 μm, those of the lower cortex 5-6 x 5-7 μm; internal part of thallus with loosely interwoven chains of Nostoc and hyphae. Apothecia extremely rare. Photobiont cyanobacterial (Nostoc, the cells in chains of 12-16). Spot tests: all negative. Chemistry: without lichen substances.

Note: a mainly Western European species growing on subneutral bark or on epiphytic mosses in humid sites, also reported from the Western Alps (France). To be looked for in Italy.

Growth form: Foliose, broad lobed

Substrata: bark

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

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

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

Portugal: Madeira.