Phaeophyscia kaghanensis Niazi, Nadeem, Afshan & Khalid 2023, sp. nov

Autor: Niazi, Abdul Rehman, Afshan, Najam-ul-Sehar, Naseer, Arooj, Nadeem, Muhammad, Iftikhar, Fatima, Fayyaz, Iram, Ashraf, Asma, Imtiaz, Sawera, Fatima, Shahzadi Qamar, Khalid, Abdul Nasir
Rok vydání: 2023
Předmět:
DOI: 10.5281/zenodo.7867719
Popis: Phaeophyscia kaghanensis Niazi, Nadeem, Afshan & Khalid, sp. nov. (Fig. 2) The taxon is characterized by its greyish white to grey thallus, absence of asexual diaspores or cortical hairs, flat to slightly concave lobes, white medulla, black lower surface, large, Physcia-type ascospores of 24-30× 12-17 µm, and absence of secondary substances. HOLOTYPE. — Pakistan. Azad Jammu and Kashmir, Garhi Dupatta, 34°36’N, 73°35’E, 817 m alt., on tree bark, 2.X.2021, N. S. Afshan & A. R. Niazi, CKR-22 (holo-, LAH [LAH37615]; GenBank[OP933723]). ADDITIONAL SPECIMEN EXAMINED. — Pakistan. Khyber Pakhtunkhwa, Kaghan Valley, Sharan, 34°30’N, 73°18’E, 2500 m alt., on tree bark, 22.VIII.2022, N. S. Afshan & A. R. Niazi, KA-17 (LAH [LAH 37616]; GenBank[OP 933724]). ETYMOLOGY. — The specific epithet ‘kaghanensis’ (Latin) refers to the type locality of Kaghan Valley. CHEMISTRY. — Thallus K-, C-, KC-, P-; no lichen substance detected by TLC. HABITAT AND DISTRIBUTION. — The known collections of the new species are from moist temperate, coniferous forest in the Himalaya in Azad Jammu and Kashmir. The specimens were found on siliceous rock. The forest is dominated by species such as Pinus roxburghii Sarg., Pyrus pashia L., Quercus oblongata D.Don and Q. glauca Thunb. The maximum daily temperature of the region varies around 30-32°C during the summer, the average winter temperature is 4°C, and there is moderate rainfall. MYCOBANK. — MB846997. DESCRIPTION Thallus Foliose, epiphloeodal, greyish white to grey, remaining unchanged when wet, loosely attached to substratum, 3-5 cm in diam., more or less circular in outline. Lobes Densely, dichotomously or irregularly branched, without pruina, lobe tips greyish-white, flat to slightly concave, imbricate, usually upturned near the tips, 0.8-2.5 mm wide. Soralia and isidia Absent. Upper surface Dark brown, paraplectenchymatous, 20-25 µm thick. Algal layer 30-35 µm thick. Photobiont cells Globose, 10-15 µm in diam. Medulla White. Lower surface Black, usually becoming pale to dark grey towards lobe tips, not rhizinate. Rhizines Absent. Lower cortex Paraplectenchymatous, dark brown, 28-35 µm thick. Apothecia Frequent, usually present, 2.5-4 mm in diam., stipitate, lacking cortical hairs, epruinose. Disc Chocolate brown to black, dull, epruinose, flat to strongly convex. Margins Prominent, creamy to pale white. Epihymenium Light brown to brownish orange, 13-17 µm. Hymenium Hyaline, 90-110 µm. Hypothecium Hyaline, 25-35 µm. Ascus Cylindrical to clavate, 70-83 × 22-28 µm. Ascospores Dark brown, ellipsoid, Physcia - type, 24-30× 12-17µm. Paraphyses Hyaline, branched and anastomosing, 2-3 µm thick, wider at the apex, 4-5 µm thick. Pycnidia Not found.
Published as part of Niazi, Abdul Rehman, Afshan, Najam-ul-Sehar, Naseer, Arooj, Nadeem, Muhammad, Iftikhar, Fatima, Fayyaz, Iram, Ashraf, Asma, Imtiaz, Sawera, Fatima, Shahzadi Qamar & Khalid, Abdul Nasir, 2023, A new species and a new record of the genus Phaeophyscia Moberg (Lecanorales, Physciaceae) from Pakistan supported by phenotypic and molecular phylogenetic analyses, pp. 51-59 in Cryptogamie, Mycologie 20 (4) on pages 52-56, DOI: 10.5252/cryptogamie-mycologie2023v44a4, http://zenodo.org/record/7867201
{"references":["MOBERG R. 1995. - The lichen genus Phaeophyscia in China and Russian Far East. Nordic Journal of Botany 15 (3): 319 - 335. https: // doi. org / 10.1111 / j. 1756 - 1051.1995. tb 00158. x","SVOBODA D. 1978. - Phaeophyscia hirsuta - a little known lichen in the Czech Republic. Mycotaxon 7: 302.","LIU D. & HUR J. S. 2019. - Revision of the lichen genus Phaeophyscia and allied atranorin absent taxa (Physciaceae) in South Korea. Microorganisms 7 (8): 242. https: // doi. org / 10.3390 / microorganisms 7080242"]}
Databáze: OpenAIRE
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