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Biatora epirotica Printzen & T. Sprib.
Nomenclature
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Family: RamalinaceaeGenus: Biatora
SUMMARY
Mycobank MB 519464
Thallus ecorticate, smooth to rimose, surface beige to gray, often with a greenish tinge, matt, esorediate, up to 10 mm in diam. Photobiont trebouxioid. Apothecia sessile with a broad base or slightly constricted basally, 0.3–0.6 mm diam.; margin usually not visible, rarely as a lighter rim around the disc; disc weakly to moderately convex, white to pale ochre, matt, epruinose. Excipulum hyaline, 30–40 µm laterally, 20–45(–90) µm wide basally, of strongly gelatinized, diverging hyphae with 1–2.5 µm wide lumina, lumina of apical cells 1.5–3.5 µm wide, partly free and with thick gelatinous outer walls. Hymenium hyaline, 50–60 µm. Paraphyses colourless, weakly to moderately branched and anastomosing, mostly in basal parts of the hymenium and the subhymenium, lumina 0.8–1.2(–1.5) µm wide, apical cells with lumina of 1–3(–4) µm. Subhymenium hyaline, 20–40(–55) µm high. Hypothecium 20–40(–80) µm high, of densely entangled, narrow hyphae with lumina 0.8–1.2 µm wide, strongly gelatinised, but with characteristic lacunae 3–10 µm wide. Asci Biatora-type, 8-spored. Ascospores (0–)3-septate, (11–)12.4–16.5(–19.5) x (3.3–)4.2–4.8(–5.5) µm, hyaline, narrowly ellipsoid, sometimes slightly bent. Pycnidia not found. Secondary chemistry: no substances detected by TLC.