identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
2C7EC977E1B55EB3BA3B96E08B3C4074.text	2C7EC977E1B55EB3BA3B96E08B3C4074.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis convexa R. Mamut 2026	<div><p>Myriolecis convexa R. Mamut sp. nov.</p><p>Fig. 2</p><p>Etymology.</p><p>The epithet “convexa” refers to the convex shape of the apothecia.</p><p>Diagnosis.</p><p>The diagnostic characteristics of the new species have dispersed warts on the thallus and often convex apothecial disc, epithecium shades of reddish-brown, distinctly granular, granules insoluble in N and K and turn orange in N.</p><p>Description.</p><p>Thallus clearly visible, crustose, small dispersed warts or fine granulose or present only under apothecia, shades of pale gray or whitish-gray to white; prothallus not seen; Apothecia numerous, usually often clustered in groups of 2–3 apothecia, sessile to slightly constricted at base, 0.4–1.2 mm; Disc reddish-brown to brown or chocolate brown, usually heavily white pruinose, plane or, when apothecia crowded, then more irregular and the disc becoming.</p><p>Considerably convex; margin prominent, smooth, young ones regular in shape, round, older ones usually slightly flexuose, white to whitish-gray or becoming same color as the thallus, slightly pruinose, raised above or level with disc or, when disc strongly convex margin, not very clearly visible; Amphithecium present, distinctly divided into algal layer and cortex, algae occur as algal layer under hypothecium, discontinuous; cortex thin, distinctly expanded at the base, with granules (pol ± insoluble in K and soluble in N); Epithecium brown, reddish-brown, not at all granular (pol ±, insoluble in K and N), N + turning orange; Hymenium hyaline, 40–95 μm high; Subhymenium distinct, hyaline, to 35–45 μm high; Hypothecium hyaline, composed of gelatinized hyphae, hyphae more clear in K and N, 50–130 μm high; Paraphyses simple or slightly branched at tips, thickened, slightly expanded apically, often brown pigmented at tips, free in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, ellipsoid to narrowly ellipsoid, 6.5–15 × 4.5–6.5 μm. Pycnidia not seen.</p><p>Chemistry.</p><p>Apothecial margin K –, C –, KC –, PD –; disc K –, C –, KC –, PD –; No lichen products detected by TLC.</p><p>Habitat.</p><p>on rock.</p><p>Notes.</p><p>M. convexa, in many aspects, shares characteristics similar to those of other species of the genus Myriolecis, such as scattered to crowded apothecia with a mostly white thalline margin, narrowly to broadly ellipsoid ascospores, and no lichen products. However, M. convexa differs from all species by its small, dispersed, areolate thallus and usually distinctly convex apothecial discs. Morphologically, M. convexa is similar to M. hagenii (Ach.) Śliwa, Zhao Xin &amp; Lumbsch in having heavily pruinose, reddish-brown apothecia; however, M. hagenii never has a distinct thallus, and its epithecium usually has K-soluble granules and smaller apothecia with a much thinner, entire to incised apothecial margin (Śliwa and Hawksworth 2006; Śliwa 2007).</p><p>Type species.</p><p>China • Xinjiang, Urumqi city, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=86.79722&amp;materialsCitation.latitude=43.37861" title="Search Plazi for locations around (long 86.79722/lat 43.37861)">middle part of Tianshan Mountains</a>, 43°22'43"N, 86°47'50"E, 1864 m a. s. l., on rock, 15 Aug 2010, R. Mamut (holotype designated here 20108046) .</p><p>Additional specimens examined.</p><p>China • Xinjiang, Urumqi City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=86.81117&amp;materialsCitation.latitude=43.380028" title="Search Plazi for locations around (long 86.81117/lat 43.380028)">Bayi Forest Farm</a>, 1710 m a. s. l., 43°22'48.1"N, 86°48'40.2"E, on rock, 28 Aug 2007, R. Mamut 20071962 - a, 20071962 - b (XJU) ; • 1864 m a. s. l., 43°22'43"N, 86°47'50"E, on rock, 15 Aug 2010, R. Mamut 20108078, 20108079, 20108081, 20108082, 20108083 (XJU); • 2800 m a. s. l., 43°44'61"N, 86°48'719"E, on rock, 10 May 2010, R. Mamut 20108047 (XJU); • 2270 m a. s. l., 43°21'27"N, 86°47'32"E, on rock, 29 May 2021, R. Mamut 20210371 (XJU); • 1780 m a. s. l., 43°23'33.5"N, 86°47'71"E, on rock, 15 Jul 2022, R. Mamut T 20221204 (XJU); • Xinjiang, Urumqi City, Hou Xia, 2060 m a. s. l., 43°00'00"N, 86°34'375"E, on rock, 6 Oct 2009, R. Mamut 20090106 (XJU) ; • Xinjiang, Changji, Ha Xiong Gu, 1870 m a. s. l., 43°48'626"N, 87°59'658"E, on rock, 8 Jul 2013, R. Mamut 20130708 (XJU) .</p></div>	https://treatment.plazi.org/id/2C7EC977E1B55EB3BA3B96E08B3C4074	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
368F596609485391948F9898C7D31633.text	368F596609485391948F9898C7D31633.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis fugiens (Nyl.) Sliwa, Zhao Xin & Lumbsch.	<div><p>Myriolecis fugiens (Nyl.) Śliwa, Zhao Xin &amp; Lumbsch.</p><p>Fig. 5</p><p>Description.</p><p>Thallus not well developed or only evident around the apothecia; prothallus not seen; Apothecia rounded, usually not common, occurring singly, sessile, when apothecia constricted at the base, apothecia distinctly cup-shaped; Disc apparently pruinose, yellowish-brown to pale reddish-brown, sometimes also pale yellow, flat; thalline margin present, thick, level with the disc or ± higher, pruinose, white; Amphithecium indistinct to distinctly divided into cortex and algal layer, algae dense or sparse; cortex expanded at the base, granular (pol +, insoluble in K, soluble in N); Epithecium brown to reddish-brown, granular (pol ±, soluble in K and insoluble in N); Hymenium hyaline, to 50–75 μm high; Subhymenium indistinct; Hypothecium hyaline, 95–130 μm high, composed of gelatinized hyphae, more clear in K. Paraphyses slightly branched, slightly or not expanded, without swelling or pigment cap in apical cell, free in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, mostly ellipsoid (broadly ellipsoid to ellipsoid), 8.5–12 × 4.5–6 μm; Pycnidia not seen.</p><p>Habitat.</p><p>On calcareous rock.</p><p>Chemistry.</p><p>Apothecial margin K + yellow, C + orange, KC + yellow to orange, PD + pale orange; disc K + yellow, C + orange, KC + orange, PD + orange. Pannarin detected by TLC.</p><p>Notes.</p><p>M. fugiens was first described by James in 1960 (James 1960), who provided a detailed morphological description. Morphologically, M. fugiens is similar to M. invadens (H. Magn.) Śliwa, Zhao Xin &amp; Lumbsch and Myriolecis flowersiana (H. Magn.) Śliwa, Zhao Xin &amp; Lumbsch. However, M. fugiens can be distinguished from these species by its chemistry, specifically the consistent presence of pannarin, as well as its spot test reactions: C + orange, KC + orange, and PD + orange. Additionally, M. fugiens differs in its anatomy, notably by having K-soluble granules in the epithecium and N-soluble granules in the cortex.</p><p>Specimens examined.</p><p>China • Xinjiang, Atux, Aketao County, Oytag, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=75.199165&amp;materialsCitation.latitude=38.898335" title="Search Plazi for locations around (long 75.199165/lat 38.898335)">Mt. Southern Tianshan</a>, 38°53'54"N, 75°11'57"E, 2930 m a. s. l., on rock, 27 Aug 2013, R. Mamut 20136188 - a, 20136188 - b, 20137179-1 (XJU) .</p></div>	https://treatment.plazi.org/id/368F596609485391948F9898C7D31633	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
0FBB9E557BE65E5C9B8BC31F38C3F16D.text	0FBB9E557BE65E5C9B8BC31F38C3F16D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis incisa R. Mamut 2026	<div><p>Myriolecis incisa R. Mamut sp. nov.</p><p>Fig. 3</p><p>Etymology.</p><p>The epithet “ incisa ” refers to the incised apothecial margin of this new species.</p><p>Diagnosis.</p><p>The new species has whole cortex with bluish-green pigment (this part becoming pink in N) and epithecium shades of olive to dark brown (turning red in N). M. incisa is also well recognized by the small crenated apothecial margin.</p><p>Description.</p><p>Thallus crustose, moderately thick (0.1–0.3 mm), areolate to rimose, but not leprose, margin determinate, not or rarely pruinose, shades of brown to yellowish-brown or dark gray; Prothallus not visible. Apothecia usually numerous, lecanorine, sessile, densely covering most of thallus, emerging on the surface of thallus, 0.3–1.0 mm diameter, occurring singly; disc plane, almost black, epruinose to slightly pruinose; Thalline margin prominent, raised above discs, rough, incised to distinctly crenate, epruinose, most often white; Amphithecium present, with a discontinuous algal layer, algae sparse; cortex distinctly delimited, clearly expanded at the base, 45–60 μm wide laterally and 25–35 μm wide at the base, often obviously bluish pigmented and more intense and becoming pink in N, not granulose; Epithecium olive to dark brown, distinctly granular, granules superficial and between paraphyses tips (pol ±), slowly disappearing in K and also often turning red in N; Hymenium hyaline, 45–70 μm high; Subhymenium indistinct to distinct, hyaline, thin, 15–20 μm high; Hypothecium hyaline, 40–110 μm high, composed of gelatinized hyphae; Paraphyses slender, simple, thick, slightly expanded, distinctly septate, deep green pigmented at the tips, coherent in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, ellipsoid, 7–13 × 4.5–8.5 μm. Pycnidia not seen.</p><p>Chemistry.</p><p>Apothecial margin K –, C –, KC –, PD –; disc K –, C –, KC –, PD –; No lichen products detected by TLC.</p><p>Habitat.</p><p>On calcareous rock.</p><p>Notes.</p><p>This species is easily recognizable due to its distinctly developed rimose-areolate thallus and its almost black, either epruinose or only slightly pruinose, apothecial disc with an incised margin. Additionally, the species carries a bluish-green pigment covering the entire cortex, along with shades of olive to dark brown in the epithecium that turns pink and red in N. These characteristics are not observed in other species of the same genus. Myriolecis incisa is similar to M. perpruinosa (Fröberg) Śliwa, Zhao Xin &amp; Lumbsch and M. caesioalutacea (H. Magn.) R. Mamut.</p><p>However, M. perpruinosa usually has submoniliform paraphyses, an ash-gray thallus, and bluish-white pruina on the dark apothecial disc. In addition, M. perpruinosa has greenish cortex cell walls, with only the outer part of the cortex N + purple (Fröberg 1997; Śliwa 2007; Muchnik and Śliwa 2011). M. caesioalutacea is characterized by a bluish-white pruinose apothecial disc, a thallus-colored apothecial margin (ashy brown, brown to dark brown), and a thallus containing 2, 7 - dichlorolichexanthone (Magnusson 1940; Mamut et al. 2019). The new species is morphologically similar to M. hagenii in its epruinose to slightly whitish pruinose apothecial disc, which has an incised rather than distinctly crenate apothecial margin. However, M. hagenii differs from the new species by having small apothecia up to 0.8 mm diam., with an orange to reddish tint and a maroon to brown disc. M. hagenii also has a considerably thinner amphithecial cortex (Śliwa 2007; De la Rosa et al. 2012).</p><p>Type species.</p><p>China • Xinjiang, Kashkar, Kargilik County, Mt. Kunlun, 36°34'92"N, 77°00'36"E, 2880 m a. s. l, on rock, 30 Jun 2008, R. Mamut (holotype designated here 20080999) .</p><p>Additional specimens examined.</p><p>China • Kashkar, Kargilik County, Mt. Kunlun, 2880 m a. s. l, 36°34'92"N, 77°00'36"E, on rock, 30 Jun 2008, R. Mamut 20080997, R. Mamut 20080998, R. Mamut 20080994, R. Mamut 20080995, R. Mamut 20080996, R. Mamut 20080986, R. Mamut 20080961 (XJU) .</p><p>Ecology and distribution.</p><p>M. incisa is known only from the Kunlun Mountains. It grows on calciferous rock, often with other members of Myriolecis, for example, M. altunica R. Mamut and M. caesioalutacea and overgrowing or commensally on other lichens, for example, Caloplaca spp.</p></div>	https://treatment.plazi.org/id/0FBB9E557BE65E5C9B8BC31F38C3F16D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
029AD596BA6D58B59C092E8B4FE74760.text	029AD596BA6D58B59C092E8B4FE74760.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis kunlunica R. Mamut 2026	<div><p>Myriolecis kunlunica R. Mamut sp. nov.</p><p>Fig. 4</p><p>Etymology.</p><p>“ kunlunica ” according to the specimen collection location, Kunlun Mountain.</p><p>Diagnosis.</p><p>Myriolecis kunlunica is characterised by its clearly visible, often forming distinct rimose thallus and the white heavily pruina on the dark apothecial disc and chemical characters (2, 7 - dichlorolichexanthone).</p><p>Description.</p><p>Thallus crustose, usually distinct, continuous, forming areolate to rimose, sometimes partly superficial, shade of brown to dark brown; Prothallus not visible; Apothecia abundant, lecanorine, occurring scattered to crowded, sessile, 0.5–1.2 mm diam.; Disc plane, almost black, heavily pruinose, never epruinose; Thalline margin prominent, thick, smooth, level with the disc or raised above discs, slightly flexuose, when old, apothecia white, pruinose; Amphithecium with algae and cortex, algal layer discontinuous, algae not very dense; Cortex well delimited, but not very thick, slightly expanded at the base, strongly expanding in K and N, N + pink upper part, with granules (well-visible in polarised light, insoluble in K, soluble in N); Epithecium brown to red brown or olive, unchanged with K, but N + reddish or deep orange, not at all granular; Hymenium hyaline, 35–70 μm high; Subhymenium distinct, hyaline, thin, 25–55 μm high; Hypothecium hyaline, 40–110 μm high, composed of gelatinized hyphae; Paraphyses slender, simple, expanded apically, distinctly septate, brown pigmented, coherent in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, ellipsoid (broadly ellipsoid to ellipsoid), 7–12 × 4.5–7.5 μm. Pycnidia not seen.</p><p>Chemistry.</p><p>Apothecial margin K –, C –, KC –, PD –; disc K –, C –, KC –, PD –; 2, 7 - dichlorolichexanthone detected by TLC.</p><p>Habitat.</p><p>On calcareous rock.</p><p>Notes.</p><p>M. kunlunica is characterized by its much more abundant thallus, usually pruinose and almost black apothecial discs, the presence of dispersa - like granules in the epithecium (insoluble in K and N, N + red), and a black-green color at the very top of the margin (N + purple). M. kunlunica is similar to M. perpruinosa, but the latter differs in having an ash-gray thallus and bluish-white pruina, a black or dark brown apothecial disc, and thick, submoniliform paraphyses.</p><p>Type species.</p><p>China • Xinjiang, Kashkar, Kargilik County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=75.53833&amp;materialsCitation.latitude=36.975834" title="Search Plazi for locations around (long 75.53833/lat 36.975834)">Mt. Kunlun</a>, 36°58'33"N, 75°32'18"E, 4055 m a. s. l., on rock, 29 Jul 2008, R. Mamut (holotype designated here 20090729) .</p><p>Additional materials examined.</p><p>China • Xinjiang, Kashkar, Kargilik County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=75.53833&amp;materialsCitation.latitude=36.975834" title="Search Plazi for locations around (long 75.53833/lat 36.975834)">Mt. Kunlun, Serik Daban</a>, 36°58'33"N, 75°32'18"E, 4055 m a. s. l., on rock, 29 Jul 2008, R. Mamut 20040671, 200801001, 20081009, 20080989 (XJU) .</p><p>Ecology and distribution.</p><p>M. kunlunica is known only from the Kunlun Mountains. It grows on calciferous rock, often with Aspicilia sp. and other members of Myriolecis .</p></div>	https://treatment.plazi.org/id/029AD596BA6D58B59C092E8B4FE74760	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
43A16D874BDC5FB8AAC4CACE7F349525.text	43A16D874BDC5FB8AAC4CACE7F349525.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis mons-nivis (Darb.) Sliwa, Zhao Xin & Lumbsch.	<div><p>Myriolecis mons-nivis (Darb.) Śliwa, Zhao Xin &amp; Lumbsch.</p><p>Fig. 6</p><p>Description.</p><p>Thallus clearly visible, thin, continuous, more or less rimose, edge indefinite, brown to dark brown; prothallus not seen; Apothecia numerous, usually clustered in groups or occurring singly, sessile or constricted at the base, 0.3–0.8 mm in diameter; Disc plane smooth, dark brown to dark blue, epruinose; thalline margin level with the disc, rough, cracked with numerous small fissures or flexuose or incised, epruinose, white to grayish-white; Amphithecium not well delimited into algal layer and cortex, algal layer with algae abundant filling, continuous; cortex indistinctly divided, composed of granules (pol +, insoluble in K and N); Epithecium shades of reddish-brown to brown, granules superficial and inspersed in paraphyses tips (pol ±, insoluble in K and N); Hymenium hyaline, 45–65 μm high; Subhymenium indistinct or distinct, thin, hyaline; Hypothecium hyaline 40–65 μm high, composed of gelatinized hyphae (most clear in K); Paraphyses slender, simple, never branched, expanded to capitate apically, red-brownish pigmented, with sharply delimited as a cap (up to 0.3 μm), coherent in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, broadly ellipsoid to narrowly ellipsoid, 7–12 × 5–8 μm, Pycnidia not seen.</p><p>Chemistry.</p><p>Apothecial margin K –, C –, KC –, PD –; disc K –, C –, KC –, PD –; No lichen products detected by TLC.</p><p>Habitat.</p><p>On calcareous rock.</p><p>Notes.</p><p>The species can be easily identified by its clearly visible, rimose thallus and dark brown, usually epruinose apothecial disc, as well as by its white to ash-gray apothecial margin with slight cracks and reddish-pigmented epithecium. This species is closely related to M. flowersiana, which differs in its apothecial color and has more submoniliform, pigmented, and distinctly septate paraphyses as well as narrowly ellipsoid spores. Additionally, the epithecium of M. flowersiana is deeply pigmented, with up to one-third of the upper hymenium exhibiting more intense red coloration (Śliwa 2007; De la Rosa et al. 2012). Morphologically, the newly recorded species is identical to M. dispersa (Pers.) Śliwa, Zhao Xin &amp; Lumbsch; however, M. dispersa has an inconspicuous thallus and a distinctly granular epithecium that is tinged yellow or brown, contains pannarin, and has a PD + orange reaction of the apothecial margin (Fröberg 1997; Śliwa 2007; Muchnik and Śliwa 2011; De la Rosa et al. 2012).</p><p>Specimens examined.</p><p>China • Xinjiang, Atux, Aketao County, Oytag, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=75.199165&amp;materialsCitation.latitude=38.898335" title="Search Plazi for locations around (long 75.199165/lat 38.898335)">Mt. Southern Tianshan</a>, 38°53'54"N, 75°11'57"E, 2930 m a. s. l., on rock, 27 Aug 2013, R. Mamut 201367, 201368, 201366, 201369, 201364, 201363 (XJU) .</p></div>	https://treatment.plazi.org/id/43A16D874BDC5FB8AAC4CACE7F349525	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
7D07296613D657F2BF078592D59AEE90.text	7D07296613D657F2BF078592D59AEE90.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Myriolecis wetmorei (Sliwa) Sliwa, Zhao Xin & Lumbsch.	<div><p>Myriolecis wetmorei (Śliwa) Śliwa, Zhao Xin &amp; Lumbsch.</p><p>Fig. 7</p><p>Description.</p><p>Thallus not clearly visible within the substratum and present only under apothecia or poorly developed; prothallus not seen; Apothecia lecanorine, sessile, constricted at the base, occurring singly and usually rarely clustered in groups, 0.4–1.0 mm diam.; disc black, strongly pruinose, never epruinose, smooth, flat; thalline margin prominent, level with the disc, smooth, thick, heavily white pruinose; Amphithecium developed with distinctly delimited into algal layer and cortex, algae abundant and dense, continuous; cortex strongly expanded at the base, 15–35 μm wide laterally and 50–65 μm wide at the base, composed of granules (pol +, insoluble in K, soluble in N); Epithecium brown to dark brown, N + reddish at beginning and then soon disappearing, granules superficial (pol +, soluble in K, insoluble in N); Hymenium hyaline, 45–65 μm high; subhymenium distinct, 25–65 μm high; Hypothecium hyaline, 35–50 μm high, composed of gelatinized hyphae. Paraphyses simple, rarely branched, expanded, pigmented, free in K. Asci clavate, 8 - spored; Ascospores hyaline, simple, ellipsoid (broadly ellipsoid to ellipsoid), 8.5–12 × 4.5–6.5 μm; Pycnidia not seen.</p><p>Chemistry.</p><p>Apothecial margin K –, C –, KC –, PD –; disc K –, C –, KC –, PD –; No lichen products detected by TLC.</p><p>Habitat.</p><p>Corticolous species occurring on tree bark.</p><p>Notes.</p><p>M. wetmorei is sometimes difficult to separate from M. hagenii and M. perpruinosa, as the three species possess finely pruinose apothecia. M. hagenii is distinguished on account of smaller apothecia (up to 0.8 mm diam.) with a much thinner, entire to incised rather than cracked apothecial margin. M. perpruinosa differs from M. wetmorei by having a clearly visible thallus and greenish cortex cell walls, with the outer part of the cortex turning purple in N (Fröberg 1997; Śliwa 2007; Muchnik and Śliwa 2011). Morphologically, the newly recorded species is identical to M. torrida (Vain.) Śliwa, Zhao Xin &amp; Lumbsch, but the latter species is easily separable by its more warted and rimose-areolate thallus. In addition, anatomically, it differs in having its epithecium colored olive-green, intensely green with K, and turning reddish-brown or red in N (Śliwa and Olech 2002; Śliwa 2007).</p><p>Specimens examined.</p><p>China • Xinjiang, Urumqi City, Mt. Middle Tianshan, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=87.09667&amp;materialsCitation.latitude=43.46889" title="Search Plazi for locations around (long 87.09667/lat 43.46889)">Yingxiong Bridge</a>, 43°28'08"N, 87°05'48"E, 2110 m a. s. l., on bark, 15 Aug 2006, R. Mamut 060815 (XJU) ; • Aksu City, Kucha County, Mt. Southern Tianshan, Tilmat Daban, 2450 m a. s. l., on bark, 13 May 2007, R. Mamut 20121719, 2003111 (XJU) ; • Atux City, Aketao County, Oytag, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=75.199165&amp;materialsCitation.latitude=38.890278" title="Search Plazi for locations around (long 75.199165/lat 38.890278)">Mt. Southern Tianshan</a>, 2930 m a. s. l., 38°53'25"N, 75°11'57"E, on bark, 27 Aug 2013, R. Mamut 20137264 (XJU) .</p></div>	https://treatment.plazi.org/id/7D07296613D657F2BF078592D59AEE90	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Payzulla, Tursunay;Adil, Guldiyar;Mamut, Reyim	Payzulla, Tursunay, Adil, Guldiyar, Mamut, Reyim (2026): New and noteworthy records of Myriolecis (Lecanoraceae, lichenized Ascomycota) in the arid regions of northwestern China. MycoKeys 133: 323-344, DOI: 10.3897/mycokeys.133.186955
