Lecanora hagenii
Lecanora hagenii Rabenh., Flecht. Europ.7: no. 174 (1857)
Facesoffungi number: FoF05800
Lichenized on dead stems. Thallus: crustose, grey to green, granulose. Sexual morph: Apothecia 0.5–0.8 mm diam., arising singly or in small groups, sessile, slightly erumpent from the thallus, cupulate to pulvinate, roundish, grey. Hypothecium convex. Margins concolorous to receptacle. Disc brown to orange. Hymenium hyaline, within a thick gelatinous matrix. Epithecium branched and pigmented paraphyses apices form clearly distinguishing pseudo epithecium above the hymenium, brownish. Excipulum 50–55 µm at flanks, composed of large, thin-walled, brownish cells of textura angularis to globulose. Paraphyses 3–4 µm wide at tips, numerous, filiform, obtuse and branched at the apex, septate, brown pigmented. Asci 30–35 × 7–15 µm, 8-spored, cylindrical to globose, short sessile, rounded at the apex, narrowed to the base. Ascospores 8–10 × 3.5–4.5 µm, multi-seriate, hyaline, smooth and thick walled, ellipsoid. Asexual morph: Undetermined.
Material examined – Russia, Rostov region, Shakhty City, stony steppe on slopes near Grushevka River (N 47.72279°, E 40.25434°), on dead stems of Pontic endemic plant Scrophularia donetzica Kotov (Scrophulariaceae), 14 May 2015, Timur S. Bulgakov, T-396 (MFLU 16-0605).
GenBank accessions – ITS-MK499339
Notes – Our collection of Lecanora hagenii from Russia clustered with L. hagenii (Lh2) collections from Hungary (Śliwa et al. 2012). GenBank blast results shows that ITS data of our collection were 99% similar to that of L. hagenii (Lh2) and the clade received 100% bootstrap support. These two L. hagenii sequences formed a monophyletic clade close to L. dispersa (Fig. 1). Moreover, morphology of our collection is similar to the description of L. hagenii provided by Śliwa (2007). This species is common in both tropical and temperate regions (Śliwa 2007). Zhurbenko & Notov (2015) and Ismailov et al. (2017) previously recorded L. hagenii from Russia, but it is the first record of this species from Rostov region.
Morphology of Lecanora hagenii (MFLU 16-0605). a, b Ascomata on wood. c Cross section of an ascoma. d Apically branched paraphyses. e, f Asci and paraphyses. g Ellipsoid ascospores. Scale bars: c = 100 µm, d, e, f = 15 µm, g = 10 µm.
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