Thalloidima tauricum Szatala

Borbasia, 4: 79, 1942.
Synonyms: Toninia clemens H. Baumg. nom. inval.; Toninia schafeevii Tomin; Toninia taurica (Szatala) Oxner
Distribution: N - Frl, Ven (Nascimbene 2003b, 2005c, Nascimbene & Marini 2007), TAA (Nascimbene 2008b, Spitale & Nascimbene 2012), Lomb, Piem (TSB 33999), Lig (TSB 33477). C - Tosc (Tretiach & al. 2008), Marc (Nimis & Tretiach 1999), Umb (Nimis & Tretiach 1999, Ravera & al. 2006, Panfili 2007), Laz (Nimis & Tretiach 2004), Abr (Caporale & al. 2016), Sar. S - Pugl (Nimis & Tretiach 1999), Cal (Puntillo 1996), Si (Nimis & al. 1994).
Description: Thallus squamulose, olivaceous brown, epruinose, somehow glossy, with regular, evident fissures in the cortex, the squamules 2-3(-4) mm wide, contiguous to imbricate, orbicular or irregularly lobed, convex to bullate; lower surface pale brown to black. Upper cortex 80-200 μm thick, including an up to 150 μm thick epinecral layer, lacking crystals; algal layer continuous; medulla white, lacking crystals. Apothecia frequent, lecideine, sessile, strongly constricted at base, up to 3 mm across, with a black, but usually densely bluish-pruinose, weakly concave to weakly convex, smooth disc, and a distinct, persistent, smooth, faintly pruinose to epruinose margin. Proper exciple grey in outer part, colourless within, the pigmented parts K+ and N+ violet; epithecium grey, K+ and N+ violet; hymenium colourless, 60-70 μm high; paraphyses coherent, simple or sparingly branched and anastomosing in upper part, thin-walled, the apical cell distinctly swollen and covered by a gelatinous pigment cap; hypothecium pale brown to colourless. Asci 8-spored, clavate, surrounded by a gelatinous I+ blue coat, with a well-developed I+ blue tholus with a I+ darker blue tube and a well-developed ocular chamber, Bacidia-type. Ascospores 1-septate, hyaline, fusiform, 16.5-24.5 x 3-4.5 µm. Pycnidia dark, immersed. Conidia filiform. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances, Sedifolia-grey pigment in apothecia.
Note: a mainly southern species with an Eurasiatic distribution, found on calciferous soil and in fine crevices of the rocks, often associated with cyanobacterial lichens when young, with a wide altitudinal range but generally rare in the eu-Mediterranean belt.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rather rare
Oromediterranean belt: very rare
Montane belt: rare
Submediterranean belt: very 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 CC BY-SA 04
TSB 34625



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13391)
2001/12/01


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thalloidima_tauricum.htm
France, session AFL 2015 dans le Lot


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thalloidima_tauricum.htm
France, session AFL 2015 dans le Lot


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thalloidima_tauricum.htm
France, session AFL 2015 dans le Lot


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thalloidima_tauricum.htm
France, session AFL 2015 dans le Lot


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thalloidima_tauricum.htm
France, session AFL 2015 dans le Lot