ITALIC 8.0

Lecania croatica (Zahlbr.) Kotlov

Nov. sist. Niz. Rast., 37: 251, 2004.. Basionym: Catillaria croatica Zahlbr. - Ann. Mycol., 4, 6: 487, 1906.

Synonyms: Coppinsidea croatica (Zahlbr.) S.Y. Kondr., Farkas & Lőkös

Distribution:

Description: Thallus crustose, thinly episubstratic or partially endosubstratic, 50-70 μm thick, continuous to usually areolate, pale grey, brownish or grey-green, more intensely green when wet, with yellowish to yellow-green, intensively green when wet, 0.2-0.4 mm wide, concave to convex, well-delimited (never confluent), punctiform soralia with very fine, 12-15 μm wide, farinose soredia, which sometimes are aggregated into c. 30 μm thick consoredia. Apothecia very rare, biatorine but sometimes indistinctly lecanorine when young, 0.2-0.4(-0.7) mm across, with a pale orange to brown-black, sometimes mottled disc and a thin, usually paler proper margin. Exciple usually patchily brown, especially adjacent to hymenium, occasionally entirely brown or colourless, 60-80 μm wide, of thick-walled, radiating hyphae, sometimes containing a few algae at the base in young apothecia; epithecium colourless; hymenium colourless in upper part, brown in lower part, c. 70 µm high; paraphyses mostly simple, c. 2 µm thick at mid-level, the apical cells up to 3.5 µm wide; hypothecium colourless to pale brown, 50-60 μm high. Asci 8-spored, clavate, with a K/I+ blue apical dome penetrated by a narrow, K/I– apical cushion surrounded by a narrow, deeply K/I+ blue zone, the wall K/I- but surrounded by a I+ red-brown, K/I+ blue outer layer, the ocular chamber relatively small, Biatora-type. Ascospores (0-)1(-2)-septate, hyaline, narrowly ellipsoid, 12-15 x 3-4 µm, thin-walled. Pycnidia immersed, thee wall reddish-brown around the ostiole, otherwise colourless. Conidia filiform, 13-19 x c. 1 µm. Photobiont chlorococcoid, the cells 6-10 µm wide. Spot tests: thallus and soralia K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on bark of deciduous trees in different forest types; widespread in the Northern Hemisphere and also in the Alps, but not common; to be looked for in Italy.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

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

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: extremely rare

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

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5

(info)

Solar irradiation:

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5

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Aridity:

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Eutrophication:

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Poleotolerance:

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(info)

Altitudinal distribution:

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Predictive model

Index Fungorum GBIF

Kemper – Public Domain – Source: https://www.inaturalist.org/photos/28845464