Protothelenella leucothelia (Nyl.) H. Mayrhofer & Poelt

Herzogia, 7: 45, 1985. Basionym: Verrucaria leucothelia Nyl. - Flora, 47: 356, 1864.
Synonyms: Dactyloblastus leucothelius (Nyl.) Anzi; Microglaena leucothelia (Nyl.) Arnold
Distribution: N - Ven, TAA (Nascimbene & al. 2007b), Lomb.
Description: Thallus crustose, episubstratic, whitish, thin, composed of granules or warts. Perithecia 0.3-0.5 mm across, black-brown only at the punctiform ostiole, otherwise pale brown, mostly covered with a whitish thalline layer. Exciple dull greenish brown in upper part, colourless towards the base, of strongly anastomosing, to 1 μm wide, conglutinate hyphae with narrow lumina; paraphysoids thread-like, c. 1 μm thick, persistent, strongly branched and anastomosing; periphysoids absent; hymenial gel I+ reddish or I+ blue at low concentrations, K/I+ blue. Asci 8-spored, cylindrical, , thick-walled, with two functional wall layers, the outer layer I+ blue, with a very faintly I+ blue apical plug. Ascospores muriform, hyaline, fusiform-elongate, often apiculate at the ends, 24-36 x 9-14 μm, the outer wall distinctly thicker than the septa. Photobiont chlorococcoid (Elliptochloris), the algal cells surrounded by a gelatinous sheath. Spot tests: thallus K- or K+ pale yellow, C+ red, KC+ red, P-. Chemistry: an unidentified C+ red pigment in thallus.
Note: on soil, moribund bryophytes, plant debris and lichens (Cladonia), sometimes on rotting wood, near and above treeline; probably ranging throughout the Alps, but overlooked.
Growth form: Crustose
Substrata: lignum, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare
Subalpine belt: rare
Oromediterranean belt: absent
Montane belt: absent
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
Index Fungorum GBIF


P.L. Nimis CC BY-SA 4.0
TSB 15901



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15901)
2001/11/29


Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain