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| Формат: | Recurso digital |
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Zenodo
2025
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| Online-ссылка: | https://doi.org/10.5281/zenodo.17477492 |
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Оглавление:
- <p><i>Protoblastenia remota</i> Pykälä & Myllys sp. nov.</p><p>Fig. 4 C</p><p><b>Diagnosis.</b></p><p>Differs from <i>P. borealis</i> and <i>P. pseudocompressa</i> by often smaller more convex apothecia and a smaller thallus.</p><p><b>Type.</b></p><p>Finland • Varsinais-Suomi, Perniö, Lupaja, Alhonmäki, abandoned lime quarry, on W-slope, 9 August 1991, J. Pykälä 8547 (H 9250943 – holotype, GenBank accession number: PV 766698).</p><p><b>Description.</b></p><p>Thallus white to grey, endolithic to sparse small areoles, 0.2–0.5 mm wide, ca. 0–0.15 mm thick, K-, C-, UV- to UV + bluish-white. Apothecia orange, 0.2–0.6 mm, convex to strongly convex, 1 / 2 - immersed to mainly superficial; ca. 15–80 apothecia / cm 2. Epihymenium yellow-brown to dark orange, 12–20 μm thick, K + violet. Hymenium 50–80 μm thick. Hypothecium colourless to pale yellow, ca. 100–200 μm thick. Paraphyses ca. 2–2.5 μm thick, apex not thickened to thickened to ca. 3–5 μm thick. Ascospores 0 - septate, (8.4 –) 9.8–11.4 – 12.9 (– 14.4) × (4.8 –) 5.0–5.6 – 6.1 (– 7.1) μm (n = 36).</p><p><b>Habitat and distribution.</b></p><p>Two specimens of this species are known: one from a lime quarry in SW Fnland and one from a calciferous schistose cliff in NE Finland. Companion species include <i>Lathagrium fuscovirens</i>, <i>Mycobilimbia tetramera</i> (De Not.) Vitik., Ahti, Kuusinen, Lommi & T. Ulvinen ex Hafellner & Türk and <i>Verrucaria deversa</i>. Furthermore, two closely-related specimens from North America and previously identified as <i>Protoblastenia</i> aff. <i>rupestris</i> (MZ 922194, MZ 922195) (Munger et al. 2022) may belong to <i>P. remota</i> (Fig. 1).</p><p><b>Etymology.</b></p><p>The name refers to the large difference in ITS of the species compared to other <i>Protoblastenia</i> species (differs by ca. 15–18 % from other species).</p><p><b>Notes.</b></p><p>Based on ITS sequences, this species is not closely related to any sequenced <i>Protoblastenia</i> species. The species is morphologically a typical <i>Protoblastenia</i> and very difficult to distinguish from several species, particularly from <i>P. borealis</i> and <i>P. pseudocompressa</i>. However, these two species have, on average, less convex apothecia, a thinner hypothecium and often a better developed thallus, but there is a wide overlap. In addition, <i>Protoblastenia borealis</i> often has larger apothecia (up to 1 mm).</p><p><b>Other specimens examined.</b></p><p>Finland • Koillismaa, Kuusamo, Oulanka National Park, Päähkänänkallio, high cliff, calciferous (dolomite) schistose rock outcrop, on SE-facing wall, st pc, 195 m a. s. l., 66°16'N, 29°31'E, 7. 8. 2010, J. Pykälä 39455 (H).</p>