Lobothallia controversa Cl. Roux & A. Nordin

Herzogia, 29: 588, 2016
Synonyms: Aspicilia calcarea var. farinosa auct.; Aspicilia farinosa auct.; Lecanora farinosa auct.; Pachyospora farinosa auct. non (Flörke) A. Massal.
Description: Thallus crustose, episubstratic, 0.1-1.1(-1.3) mm thick, white-farinose, continuous to finely cracked, rarely rimose-areolate in central parts, forming orbicular, up tp 5 cm wide patches, sometimes delimited by a dark prothalline line. Areoles 0.4-3(-6) x 0.3-2.5 mm, angular, slightly concave to flat, rarely papillose, sometimes developing on a dark hypothallus. Cortex colourless, paraplectenchymatous, overlain by a 10–40 μm thick epinecral layer, completely filled by coarse crystals soluble in N but insoluble in K, which obscure its structure; algal layer interrupted, 50-90 μm thick; medulla white, 0.1-0.35 mm thick, I-, filled with crystals. Apothecia aspicilioid, 0.2-0.7(-1.2) mm across, round to slightly irregular, immersed in the thallus, with a concave to flat, black, but usually bluish grey-pruinose disc and a 0.15-0.25 mm thick, poorly evident thalline margin. Epithecium greenish brown, covered in coarse crystals, N+ weakly emerald green, K-; hymenium colourless, 80-120 μm high, without crystals; I+ blue, then reddish brown; paraphyses sometimes submoniliform in upper part, the uppermost cells 2-3 μm wide; hypothecium colourless, underlain by a thin, often interrupted algal layer. Asci 8-spored, clavate, the thin outer coat K/I+ blue, the wall and apical dome K/I-. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, (8.5-)10-13(-14.5) x (6.5-)7-9(-10) μm. Pycnidia immersed, more or less pyriform, with a colourless wall (except near the ostiole which is greenish brown). Conidia bacilliform, straight, (4.5)5–6(-6.5) x 1–1.5 μm μm. Photobiont chlorococcoid. Spot tests: chemotype a) K-, C-, KC-, P-; chemotype b) K+ yellow-orange then sometimes reddish brown, C-, KC-, P+ brick red. Chemistry: different terpenoids; stictic and norstictic acid in chemotype b).
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rather rare
Montane belt: rather common
Dry submediterranean belt: very rare
Humid submediterranean belt: very rare
Padanian area: absent

pH of the substrata:

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Solar irradiation:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

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Occurrence data
Predictive map

P.L. Nimis CC BY-SA 4.0
TSB 32446


Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017


Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017


Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017


Pier Luigi Nimis - CC BY-SA 4.0
TSB 32145


Pier Luigi Nimis - CC BY-SA 4.0
TSB 32425


Pier Luigi Nimis - CC BY-SA 4.0
TSB 32425


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (11554)
2001/11/22


P.L. Nimis CC BY-SA 4.0
TSB 26559


P.L. Nimis CC BY-SA 4.0
TSB 11554


P.L. Nimis CC BY-SA 4.0
TSB 11554


P.L. Nimis CC BY-SA 4.0
TSB 29956


P.L. Nimis CC BY-SA 4.0
TSB 32446


Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lobothallia_controversa.htm
France, Session AFL Bourgogne - Côte-d'Or
10/7/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_3/Lobothallia_controversa.htm
France, Session AFL Bourgogne - Côte-d'Or
10/7/2015


Collezione lichenologica Abramo Massalongo del Museo di Storia Naturale G. Ligabue di Venezia - Autori: Seggi, Linda; Trabucco, Raffaella Proprietà: Fondazione Musei Civici di Venezia - CC BY-NC
Italy, Veneto, n op. Tregnago 1855
as Pachyospora calcarea v. farinosa Massal.