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Ochrolechia insularis Kantvilas & Elix
Nomenclature
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Family: OchrolechiaceaeGenus: Ochrolechia
SUMMARY
Mycobank MB 517802
Thallus crustose, intensely papillate, nodular or plicate, 0.3–4.5 mm thick, with upper surface white, smooth, matt to rather glossy, in places minutely speckled with white maculae, not pruinose or crystalline, forming irregular, undelimited patches to 10 cm across, not lobate or placodioid at margins; prothallus absent; individual nodules 0.5–1 mm wide, very densely crowded together in clumps to 5 mm wide, rather loosely attached, in section with a poorly developed cortex 15–30 µm thick composed of irregularly orientated, branched and anastomosing, short-celled hyphae 2–4 µm thick, overlain by a hyaline, epinecral layer; photobiont cells generally concentrated in a subcortical layer 40–100 µm thick, with individual cells globose, 6–15 µm; medullary hyphae loosely interwoven, 3–5 µm thick. Pycnidia immersed, visible as minute, pale brownish dimples or short cracks; condia bacilliform, 4–6.5 x 1 µm. Secondary chemistry: gyrophoric acid [major], lecanoric acid [minor or trace], 2’-O-methyllecanoric acid [± trace]; cortex K–, KC+ red, C+ red, P–, UV–; medulla K–, KC+ red, C+ red, P–, UV–.