Candelariella plumbea Poelt & Vězda

Folia Geobot. Phytotaxon., 11: 89, 1976.
Synonyms:
Distribution: N - Frl, Ven (Nimis 1994), Piem (Clerc & al. 1999), VA (TSB 29456). C - Abr (Nimis & Tretiach 1999).
Description: Thallus (which might belong to a host lichen) crustose to subsquamulose, lead-grey to almost black in sun-forms, to 1 mm thick, firmly attached with a strongly constricted basis. Marginal squamules to 1 mm long and wide, more or less deeply divided, usually weakly convex; inner squamules smaller, some of them ascending and sometimes forming coarse, 0.1-0.25 wide isidia-like outgrowths. Cortex of hyphae running parallel to the surface, overlain by a thick epinecral layer and underlain by a paraplectenchymatous tissue. Apothecia lecanorine, immersed in the thallus, 0.5-1(-1.5) mm across, round to usually undulate, with a flat to weakly convex, yellow to ochre-yellow disc, a thick, yellow proper margin, and a grey thalline margin often visible on the flanks of young apothecia. Exciple paraplectenchymatous, in upper part inspersed with minute brownish yellow crystals; epithecium yellow, granular; hymenium colourless, c. 60 µm high; paraphyses 2-3 µm thick at the base, the terminal cells swollen and up to 5 µm thick. Asci 8-spored, clavate, with an apical dome which is I+ blue only in the internal, lower part, interrupted in the centre by an I+ paler blue strip, Candelaria-type. Ascospores 1-celled, ellipsoid, hyaline, straight or slightly curved, 13-18(-20) x 4.5-6 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; apothecia K- or K+ reddish-orange, C-, KC-, P-. Chemistry: apothecia with pulvinic acid derivatives.
Note: a lichen found on nutrient-enriched, more or less calcareous rocks wetted by rain in exposed habitats, often developing along small cracks; see also note on . C. oleaginescens.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: extremely rare
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: very rare
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

Marko Doboš
Papuk Mt. (Papuk Planina), Duzluk, Croatia. Det. O. Breuss


Marko Doboš
Papuk Mt. (Papuk Planina), Duzluk, Croatia. Det. O. Breuss


Marko Doboš
Papuk Mt. (Papuk Planina), Duzluk, Croatia. Det. O. Breuss


Marko Doboš
Papuk Mt. (Papuk Planina), Duzluk, Croatia. Det. O. Breuss



P.L. Nimis CC BY-SA 4.0
TSB 19682