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Amandinea maritima Giralt, van den Boom & Elix
Nomenclature
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Family: CaliciaceaeGenus: Amandinea
SUMMARY
Mycobank MB 517731
Thallus corticolous, episubstratal, crustose, continuous, thin and smooth to moderately thickened, rugose to verrucose, whitish to creamy, covering large areas. Prothallus absent. Medulla not amyloid (I–), lacking calcium oxalate (H2SO4–). Photobiont chlorococcoid, 10–15 µm diam. Apothecia initially immersed-erumpent and apparently lecanorine, surrounded by a pseudothalline margin concolorous with the thallus, entire or cracked and discontinuous, becoming lecideine and sessile but remaining broadly attached, often contiguous, up to 0.6 mm diam. Disc black, epruinose, concave at first, then plane, rarely subconvex. Proper margin thick in young apothecia, becoming thinner, always prominent, persistent. Proper excipulum ± aethalea-type (Bungartz et al., 2007), 35–50 µm wide, prosoplectenchymatous, inner cells elongate, hyaline, outermost cells short, swollen and brown. Hymenium colourless, 50–70(–80) µm high, not inspersed with oil droplets. Hypothecium colourless, 75–100(–120) µm deep. Apical cells of the paraphyses 3–5(–6) µm diam., with dark brown cap. Asci 8-spored, Bacidia-type (Rambold et al., 1994). Ascospores Physconia-type, (9–)10.7–13.3(–15) × (4–)5.2–6.5(–7) µm (M = 12; 5.8; SD = 1.3; 0.6; n = 100), ellipsoid, straight or slightly curved, not constricted at septum, faintly microrugulate at 1000x; ontogeny of type A (Giralt, 2001). Pycnidia subimmersed, abundant, conidiophores type III (Vobis, 1980). Conidia filiform, curved, 12–20 × 0.5–1 µm. Secondary chemistry: nil or lichesterinic acid by HPLC (Elix et al., 2003).