ITALIC 8.0

Bibbya ruginosa (Tuck.) Kistenich, Timdal, Bendiksby & S.Ekman

Taxon, 67 5: 892, 2018. Basionym: Lecidea ruginosa Tuck. - Lichens of California: 25, 1866

Synonyms: Toninia ruginosa (Tuck.) Herre

Distribution:

Description: Thallus squamulose, dark olivaceous brown, dull to slightly shiny, epruinose, the squamules up to 3(-5) mm wide, contiguous, sometimes forming a more or less continuous crust, orbicular or irregularly lobed, weakly to moderately convex, smooth or shallowly fissured; lower side pale brown. Upper cortex 20-100 µm thick, including an up to 30 µm thick epinecral layer, without crystals of calcium oxalates; algal layer continuous; medulla white, without crystals. Apothecia lecideine, sessile, strongly constricted at base, up to 1.5 mm across, with a black, rarely faintly pruinose, flat to slightly convex, smooth disc and a distinct, smooth, concolorous, sometimes finally excluded proper margin. Proper exciple dark 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, lacking crystals. 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 1-7(-9)-septate, hyaline, narrowly ellipsoid to acicular, 20-42 x 3-4 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

Note: a polymorphic, holarctic, mainly temperate species growing on soil and rock, both on calcareous and basic siliceous substrata, including serpentine, often associated with cyanolichens when young. In Europe it is known from a few scattered stations, and is also known from Macaronesia. Turkey and Tadzhikistan. To be looked for in Italy.

Growth form: Squamulose

Substrata: rocks, soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

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

P.L. Nimis CC BY-SA 04

TSB 6885

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (6885)
2001/12/01

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC

P.L. Nimis CC BY-SA 04

TSB 6885

Manuel Gil

Spain, La Palma. Islas Canarias

Manuel Gil

Spain, La Palma. Islas Canarias

Manuel Gil

Spain, La Palma. Islas Canarias

Manuel Gil

Spain, La Palma. Islas Canarias

Manuel Gil

Spain, La Palma. Islas Canarias