Parabagliettoa disjuncta (Arnold) Krzewicka

Polish Bot. Stud., 27: 28, 2012. Basionym: Verrucaria disjuncta Arnold - Flora, 47: 599, 1864.
Synonyms: Clauzade & Cl. Roux nom. inval.; Lithocia tristis f. depauperata A. Massal.; Verrucaria tristis f. acrustacea Asta; Verrucaria tristis f. depauperata (A. Massal.) A. Massal.
Distribution: N - Ven, TAA (Nascimbene & al. 2022). C- Abr (Nimis & Tretiach 1999, Gheza & al. 2021).
Description: Thallus crustose, endosubstratic or very thinly episubstratic, poorly evident, appearing as minute brownish flecks, sometimes delimited from conspecific thalli by a dark prothalline line. Upper cortex poorly delimited; medulla prosoplectenchymatous, K/I+ violet, without macrospheroids. Perithecia 1/3 to half immersed, often in clusters of 2-3, forming black projections the apical part 0.5-0.7 mm across, distinctly flattened, leaving shallow pits when they fall off. Involucrellum well-developed, disc-shaped, extending to base-level, progressively thicker downwards, 80-150 μm thick at base; exciple 0.25-0.4 μm across, the wall dark brown in upper part, colourless at base, rarely colourless throughout; hamathecium of 25-35 μm long periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled to (rarely) 1-septate, hyaline, broadly ellipsoid to globose, (8-)10-14 x (5-)6-8 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a formerly very poorly understood species growing on inclined to vertical surfaces of calcareous rocks, probably much more widespread in the Alps. For further details see Breuss & Berger (2010).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: 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

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_V/Texte_V/Verrucaria_disjuncta.htm
France, 19/9/2015 - Villars-de-Lans, Vercors - Isère



P.L. Nimis CC BY-SA 04
TSB 25214


Pier Luigi Nimis - CC BY-SA 4.0
Herbarium: TSB 25214



P.L. Nimis CC BY-SA 04
TSB 25214


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