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Megalospora galapagoensis Bungartz, Ziemmeck & Lücking
Nomenclature
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Family: MegalosporaceaeGenus: Megalospora
Species:
Megalospora galapagoensis Bungartz, Ziemmeck & Lücking
SUMMARY
Mycobank MB 517797
Thallus yellowish grey to whitish grey, glossy, thick, uneven to slightly rugulose, up to 20 cm diam. Soredia present, diffuse, starting out as coarse, corticated granules but soon becoming confluent and maculate. Apothecia round, 0.5–1.5 mm in diam., up to 0.6 mm high, disc concave when young, becoming flat to slightly convex when mature, grey-black to black, glossy, epruinose. Margin prominent, thick, black. Excipulum brownish, K–. Epihymenium reddish brown, 10–20 µm thick. Hypothecium brown, 100–130 µm high. Hymenium 200–250 µm high, hyaline, strongly inspersed, amyloid. Ascospores single, hyaline, (3–)5-septate, 45–75 x 15–25 µm. Secondary chemistry: usnic acid and zeorin.