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All Fungi
Lecanora ochroidea
Nomenclature
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Family: LecanoraceaeGenus: Lecanora
SUMMARY
Thallus continuous and finely cracked to areolate, clearly delimited, areoles often uneven in height, ± flat, the margins crenulate, white or pale grey, surface coarsely granular to warted. Prothallus white, fibrous, generally well-developed. Soralia and isidia absent. Photobiont a green alga.
Anamorph: no information available.
Teleomorph: ascomata apothecia, 0.7-2 mm diam., scattered or aggregated, sessile and finally constricted below. Thalline exciple entire, tending to be paler than the thallus, becoming excluded. Discs pink- to pale grey-brown, convex to almost subglobose, usually densely white pruinose. Epithecium brown, granular, K+ red (with needle-like crystals). Hymenium 60-80(-100) μm tall. Interascal tissue of paraphyses 1.5-2 μm diam., fairly thick-walled, simple or sparsely branched, especially above, apices to 3.5 μm diam., sometimes irregular and generally with the terminal cell subglobose. Asci cylindric-clavate, 8-spored. Ascospores (8-) 10-14 × (5-) 6-8.5 μm, ellipsoidal, hyaline, aseptate, thin-walled, without a perispore or gelatinous sheath.
Chemistry: thallus C–, K+ yellow→red, Pd+ orange to red, UV± pale orange (atranorin, chloratranorin, protocetraric, norstictic and connorstictic acids).