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Tapellaria albomarginata Lücking
Nomenclature
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Family: EctolechiaceaeGenus: Tapellaria
SUMMARY
Mycobank MB 517813
Thallus dispersed into rounded, partly confluent patches, 10–25 mm across and 10–15 µm thick, ecorticate, smooth, pale grey to white. Apothecia rounded to strongly irregular in outline, 0.3–0.5 mm diam. and 100–150 µm high; disc plane to slightly concave, black; margin thin, pale grey pruinose (in necrotic specimens pure black). Excipulum 20–30 µm broad, pale brown. Hypothecium 20–50 µm high, dark brown, K+ purplish. Apothecial base dark purplish brown. Epithecium distinct, 5–10 µm high, dark aeruginous brown. Hymenium 50–60 µm high, colourless. Asci 40–50 x 10–15 µm. Ascospores (6–)8 per ascus, ellipsoid, 3(–4)-septate, 14–20 x 3–6 µm, 3–5 times as long as broad, colourless. Campylidia sessile, 0.3–0.5 mm broad; lobe well-developed, hood-shaped, pale grey to white pruinose; socle not apparent. Conidia filiform with slightly clavate apex, usually enrolled, 3–7-septate, 20–40 x 2–2.5 µm, associated with scattered algal cells. Chemistry: no substances detected by TLC.