Bacidina inundata (Fr.) Vězda

Folia Geobot. Phytotaxon., 25: 432, 1991. Basionym: Biatora inundata Fr. - K. Svenska Vetensk.-Akad. Handl.: 270, 1822.
Synonyms: Bacidia arnoldiana var. inundata (Fr.) Körb.; Bacidia delicata (Larbal. ex Leight.) Coppins; Bacidia inundata (Fr.) Körb.; Bacidia inundata subsp. allecta (Nyl.) A.L. Sm.; Bacidia luridoglaucella Vain.; Bacidia subinundata (Nyl.) Forssell & Blomb.; Bacidina delicata (Larbal. ex Leight.) V.Wirth & Vězda; Lichingoldia gyalectiformis D. Hawksw. & Poelt; Woessia delicata (Larbal. ex Leight.) Sérus. & Diederich; Woessia inundata (Fr.) Sérus. & Diederich
Distribution: N - TAA (Nascimbene 2008b, Nascimbene & al. 2022), Lomb (UPS-L166849), Piem (Isocrono & al. 2004). C - Tosc, Sar. S - Camp (Aprile & al. 2003b), Bas (Puntillo & al. 2012), Cal (Puntillo 1996), Si (Grillo 1998, Grillo & Caniglia 2004).
Description: Thallus crustose, episubstratic, continuous or rimose, the surface granulose-warted, grey-green to greenish brown, often delimited by a white, fimbriate prothallus. Apothecia biatorine, sessile, pale cream-coloured to deep reddish brown or (rarely) black-brown when old, 0.2-0.6(-0.8) mm across, with an initially concave, then flat and finally convex disc, and a thin, usually paler, finally often excluded proper margin. Proper exciple dark brown or violet-brown brown in outer and upper parts, colourless within; epithecium pale brown, K+ purplish, scarcely differentiated from the hymenium; hymenium mostly colourless, 45-55 μm high; paraphyses mostly simple, 1-1.5(-2) μm thick at mid-level, the apical cells often swollen, 3.5-5 μm wide; hypothecium colourless or pale yellow in upper part. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass) never penetrating through the entire d-layer, the wall K/I-, but the thin outer gel K/I+ blue, Bacidia-type. Ascospores 3(-7)-septate hyaline, needle-like, 20-45 x 1.5-2.5(-3) µm. Pycnidia rare, of two types: a) white, with 23-55 x 0.5-1 μm, curved conidia, b) brown, with 11-19 x c. 1 μm, curved conidia. Photobiont chlorococcoid, the cells 5-12(-14) μm in diam. Spot tests: thallus and apothecia K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.
Note: apparently this is a holarctic lichen, found on periodically inundated or otherwise moist siliceous rocks, more rarely on lignum, in humid-shaded situations, with a wide altitudinal range. The several records of epiphytic B. delicata from Italy (see Nimis 2016, Nascimbene & al. 2021, 2022) are not accepted here, since according to Ekman (2023) this name has been extensively misused for, e.g. pale-fruited morphs of Bacidina adastra, B. assulata, and B. neosquamulosa.
Growth form: Crustose
Substrata: rocks and lignum
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Periodically submerged (e.g. in creeks)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: very rare
Montane belt: rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: very rare
Humid mediterranean belt: extremely rare
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; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15120)
2002/02/24



P.L. Nimis CC BY-SA 4.0
TSB 8305


Pier Luigi Nimis- CC BY-SA 4.0
Herbarium: TSB 8305



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9309)
2002/02/24


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
France, Huelgoat


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
France, Huelgoat


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
France, Montherme


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=418&lang=en
Belgium, Mohron