ITALIC 8.0

Buellia leptolepis Bagl. & Carestia

Comm. Soc. Critt. Ital., 2: 83, 1864.

Synonyms: Karschia leptolepis (Bagl. & Carestia) Arnold; Karschia saxatilis f. leptolepis (Bagl. & Carestia) Kreisel

Distribution: N - Piem (Isocrono & al. 2004), VA (Piervittori & Isocrono 1999).

Description: Thallus crustose, episubstratic, whitish, pale grey or pale grey-brown, consisting of a few, conical, scattered areoles, usually delimited by a black, often fimbriate prothallus, often growing on the thalli of crustose Lecanoraceae. Medulla white, I-, rarely I+ pale blue. Apothecia cryptolecanorine to zeorine, 0.3-0.4 mm across, black, immersed to subsessile, with a mostly flat disc and a thin, usually persistent proper margin. Proper exciple 25-35 µm wide laterally, Aethalea-type, poorly differentiated, the inner hyphae narrow, hyaline, prosoplectenchymatous, the outer hyphae parallel, moderately swollen and usually strongly carbonized with brown and aeruginose pigments reacting N+ violet-red; epithecium olive-brown to green-black, N+ violet-red; hymenium colourless, not inspersed with oil droplets, 60-80 μm high; paraphyses mostly simple, c. 2 µm thick at mid-level, the apical cells clavate, up to 5 µm wide; hypothecium colourless to pale brown. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass), the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores 1-septate, not or only slightly constricted at septum, brown, ellipsoid, 9.5-11.5 x 5.5-7.5 µm, Buellia-type, thin-walled throughout. Photobiont chlorococcoid. Spot tests: thallus K+ red (needle-like red crystals), C-, KC-, P- or P+ faintly yellow, UV-. Chemistry: norstictic acid.

Note: a parasite of crustose Lecanoraceae, hitherto known from the Alps and Scandinavia. Roux & coll. (2014) treat it as a possible synonym of B. ectolechioides.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras Myriolecis albescens and other lichens

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: very 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

Index Fungorum GBIF