Bibbya lutosa (Ach.) Kistenich, Timdal, Bendiksby & S.Ekman

Taxon, 67: 891, 2018.. Basionym: Lecidea lutosa Ach. - Lichenogr. Univ.: 182, 1810.
Synonyms: Biatorina verrucosa (A. Massal.) Jatta; Thalloidima verrucosum A. Massal.; Toninia lutosa (Ach.) Timdal; Toninia verrucosa (A. Massal.) Flagey; Toninia violacea B. de Lesd.
Description: Thallus squamulose, pale grey, dull, densely covered with a granulose, white pruina, the squamules (2-)3-6 mm wide, mostly flattened, with deep fissures in the cortex and often with a central depression; lower surface pale brown to white. Upper cortex 50-220 µm thick, including an up to 200 µm thick epinecral layer, with crystals of calcium oxalates; algal layer continuous; medulla white, usually with crystals of calcium oxalates. Apothecia lecideine, sessile, strongly constricted at base, 1-3 mm across, with a black, rarely faintly pruinose, flat, smooth disc and a distinct, smooth, concolorous proper margin. Proper exciple dark reddish brown in outer part, paler within, K+ red, N-; epithecium dark reddish brown, K+ red, N-; hymenium colourless, 60-70 µm high; paraphyses not coherent, distinctly thickened above; hypothecium pale brown to colourless. Asci 8-spored, clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass), the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores (1-)3-septate, hyaline, ellipsoid-cylindrical to bacilliform, 12-20 x 3-4.5 µm. Pycnidia dark, immersed, the wall K+ red. Conidia filiform. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances; apothecia and pycnidial walls with the Laurocerasi-brown pigment
Growth form: Squamulose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: absent
Dry submediterranean belt: extremely rare
Humid submediterranean belt: absent
Padanian area: absent

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Rarity

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Predictive map

Manuel Gil
Spain, Canary Islands, Lanzarote


P.L. Nimis CC BY-SA 4.0
GZU 111-83


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: GZU - Herb.Buschardt (2176)
2003/04/28


Manuel Gil
Spain, Canary Islands, Lanzarote


Manuel Gil
Spain, Canary Islands, Lanzarote