Microcalicium ahlneri Tibell

Bot. Not., 131: 234, 1978.
Synonyms:
Distribution: N - Frl (Puntillo & Puntillo 2009, Brackel 2016), TAA (Thor & Nascimbene 2007, Brackel 2016).
Description: Thallus not evident, not lichenized. Apothecia short-stalked, 0.4-0.7 mm high, the stalk dull black, with a coarsely granular surface deriving from clusters of sclerotized hyphae, the inner part consisting of irregularly interwoven, thick-walled hyphae. Capitulum narrowly conical, 0.1-0.3 mm across. Exciple poorly developed, reddish brown; mazaedium well-developed, with persisting, sclerotized paraphyses, protruding, green-black. Asci 8-spored, broadly ellipsoid, formed in chains from ascogenous hyphae lacking croziers, with a single functional wall layer, deliquescing at maturity. Ascospores 1-septate, blue-green, broadly ellipsoid, 5-7 x 2-2.5 µm, with a distinct ornamentation of spirally arranged ridges. Photobiont absent. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: on decorticated stumps of conifers heavily attacked by brown rot fungi, more rarely of deciduous trees, often in cavities and cracks, confined to humid upland areas; probably overlooked in the Alps, but certainly never common.
Growth form: Fungus
Substrata: lignum
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

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
Herbarium samples
Index Fungorum GBIF

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



Domenico Puntillo - CC BY-SA 4.0
Lago di Sauris (Friuli Venezia Giulia) D. Puntillo 6.12.1987 su legno di conifera



Domenico Puntillo - CC BY-SA 4.0
Lago di Sauris (Friuli Venezia Giulia) D. Puntillo 6.12.1987 su legno di conifera