Rinodina jacutica Galanina & Konoreva 2022, sp. nov.

• Main Authors: Galanina, Irina A., Sheard, John W., Konoreva, Liudmila A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Fungi; Ascomycota; Lecanoromycetes; Caliciales; Physciaceae; Rinodina; Rinodina jacutica; Ambar; Oymyakonskiy District; Sakha; Ust-Nera; Republic of Sakha
• Online Access: https://doi.org/10.5281/zenodo.7077731; http://treatment.plazi.org/id/03982C3DFFB8D760FF219CDAFD4E304E

Rinodina jacutica Galanina & Konoreva sp. nov . Mycobank no: 841873 (Figs 1A–C) Thallus thin to thick, areoles at first discrete, becoming confluent, light gray with a slight yellowish tinge. Apothecia quickly become narrowly attached. Vegetative propagules absent. Ascospores Dirinaria - type, (16.5–) 18.0–20.0 (– 23.0) × (7.5–) 8.5–10.0 (–11.5) μm, lumina Physcia- like, spores lightly pigmented at maturity, most mature spores inflated at septum, more so on application of KOH; torus absent; walls lightly ornamented. Secondary metabolite atranorin by TLC. Type:— RUSSIA, Republic of Sakha, Oymyakonskiy District, near Ust-Nera, right bank of Ambar-Yuryuete, Larix gmelinii - Sphagnum -lichen forest, 64°30′31.6″N, 143°16′56.8″E, 1179 m a. s. l., 7 July 2016, L. A. Konoreva 75 (holotype LE 15578!, isotype VLA L –2928!). Thallus thin in young parts to thick (0.4 mm) in old parts, light gray with a slight yellowish tinge, areolate, margin of scattered areoles. Areoles 0.2–0.5 mm wide, at first discrete, margins even or dissected and sublobate, then confluent, surface, matt, slightly convex. Prothallus black, well developed, clearly visible between areoles in young parts of the thallus (Fig. 1A). Vegetative propagules absent. Apothecia numerous, broadly attached when young but quickly become narrowly attached, scattered when young and densely contiguous in older parts of the thallus, 0.9–1.0 (–1.5) mm diameter (n = 30); disc black, at first plane, becoming slightly convex; thalline margin concolorous with thallus, mostly continuous but sometimes with a crenulate (beaded) appearance, to 0.1 mm wide, persistent, excipular ring absent. Сortex of apothecia to 20–30 μm wide with a slight yellowish tinge, not expanded below, epinecral layer absent, algal cells to 8.5–12 μm long. Proper exciple hyaline, 15 μm wide, expanding to 20 μm at surface, pigmented the same colour as epihymenium; hypothecium hyaline, 30–90 μm high; hymenium 80–150 μm high, paraphyses 1.5– 2.0 μm wide, not conglutinate, apices to 5.5–6.0 μm wide, ...