Myriolecis invadens (H. Magn.) Śliwa, Zhao Xin & Lumbsch

in Zhao Xin & al., Fungal Divers., 78: 301, 2016. Basionym: Lecanora invadens H. Magn. - Lich. Central Asia: 87, 1940.
Synonyms: Lecanora meolansii B. de Lesd.; Myriolecis invadens (H. Magn.) Sliwa, Zhao Xin & Lumbsch
Distribution: N - Ven (TSB 19712).
Description: Thallus crustose, endosubstratic or thinly episubstratic and poorly evident, often developed only around the apothecia, pale grey to greenish grey, often with a bluish hue. Apothecia lecanorine, sessile and often constricted at base, 0.3-0.8(-1) mm across, with a flat to convex, dark brown to patchily bluish black, epruinose or slightly pruinose disc, and an entire, smooth to slightly crenulate, pruinose, white to grey thalline margin. Thalline exciple corticate, the cortex bluish in outer and upper parts, filled with granules (visible under polarized light) which are insoluble in K, and soluble in N, the medulla rich in algae; proper exciple prosoplectenchymatous, 10-15 μm wide; epithecium yellowish brown to olive green, often at least partly blue-green, the blue-green parts N+ purple, with sparse coarse granules between paraphyses tips, which are soluble in K and insoluble in N, and an epipsamma of small granules which are insoluble in K, but soluble in N; hymenium colourless, 45–65 μm high; paraphyses simple or sparingly branched, not markedly expanded at tips; hypothecium colourless or pale yellow, 50-100 μm high. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 9-12 x 6-7.5 μm. Photobiont chlorococcoid. Spot tests: apothecial margin K- or K+ pale yellow, C- or C+ yellow, KC+ yellow, P-. Chemistry: vinetorin (5-chloro-3-O-methylnorlichexanthone), sometimes present only in traces.
Note: on calciferous rocks in upland areas, often starting the life-cycle on other crustose lichens; certainly more widespread throughout the country. The species is closely related to M. semipallida.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rare
Oromediterranean belt: rare
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples

Jason Hollinger CC0 1.0 (Public-domain) Https://lichenportal.org/cnalh/collections/individual/index.php?occid=3764995
United States, Utah, Garfield County, Aquarius Plateau, ca. 10 km E of Johns Valley Rd. on FH 17 near head of Sweetwater Creek on slopes N of road 37.827 -111.899 +-50m. Elevation: 2650 m (8692ft)


Jason Hollinger – CC0 1.0 (Public-domain) - Source: https://lichenportal.org/cnalh/collections/individual/index.php?occid=3764995
United States, Utah, Garfield County, Aquarius Plateau, ca. 10 km E of Johns Valley Rd. on FH 17 near head of Sweetwater Creek on slopes N of road 37.827 -111.899 +-50m. Elevation: 2650 m (8692ft)


TSB 16557


L. Śliwa
Herbarium: 1819, KRAM
Scale bar = 1 mm.


Jason Hollinger – CC0 1.0 (Public-domain) - Source: https://lichenportal.org/cnalh/collections/individual/index.php?occid=3764995
United States, Utah, Garfield County, Aquarius Plateau, ca. 10 km E of Johns Valley Rd. on FH 17 near head of Sweetwater Creek on slopes N of road 37.827 -111.899 +-50m. Elevation: 2650 m (8692ft)