Bacidia herbarum (Stizenb.) Arnold

Bacidia herbarum (Stizenb.) Arnold

Flora, 48: 596, 1865. Basionym: Secoliga herbarum Stizenb. - N. Acta Leopoldin.-Carolin., 30, 3: 46, 1863.

Synonyms: Bacidia fraterna Anzi

Distribution: N - Frl, TAA, Lomb, Piem (TSB 33000), Lig. C - Tosc, Umb (Ravera & al. 2006, 2006b). S - Cal (Puntillo 1996).

Description: Thallus crustose, whitish, continuous to small granulose-verrucose, sometimes inconspicuous. Apothecia frequent, lecideine, sessile and constricted at base, 0.2-0.7(-1) mm across, very pale when young, then with a flat to slightly convex, reddish brown to dark brown disc (sometimes different apothecia of the same thallus having different hues), and a smooth, rather thin, sometimes finally blackening proper margin. Proper exciple colourless or straw-coloured, often orange- or red-brown at the outer edge, of radiating, narrow hyphae, but with 1-2 rows with swollen lumina (to 6 μm wide) at the outer edge; epithecium almost colourless to brownish, K-; hymenium colourless, 45-60 µm high; paraphyses simple, 1-1.5 µm thick at mid-level, the apical cells clavate, up to 3-4 µm wide; hypothecium pale orange-brown and K- in upper part, orange-brown, straw to colourless in lower part. Asci 8-spored, clavate to cylindrical-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 3-7-septate, hyaline, acicular, 30-60 x (1.7-)2-2.5(-3) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a cool-temperate to arctic-alpine, probably circumpolar lichen found on plant remains and muribund bryophytes on calciferous ground, more rarely on bark, with optimum in upland areas; probably more widespread in Italy, also along the Apennines.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: rare

Oromediterranean belt: very rare

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

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

Herbarium: TSB (2010)
2003/02/12

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

Herbarium: TSB (2010)
2003/02/12

Pier Luigi Nimis - CC BY-SA 4.0; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (2010)

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias

Marta González & Enrique Rubio

Spain, Asturias
Hymenium I/KI+

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_B/Textes_B2/Bacidia_biatorina.htm

France, Forêt des Touches, alt. 1100 m, sur roche calcaire, Villard-de-Lans - Isère
26/3/2018

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_B/Textes_B2/Bacidia_biatorina.htm

France, Forêt des Touches, alt. 1100 m, sur roche calcaire, Villard-de-Lans - Isère
26/3/2018

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_B/Textes_B2/Bacidia_biatorina.htm

France, Forêt des Touches, alt. 1100 m, sur roche calcaire, Villard-de-Lans - Isère
26/3/2018

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_B/Textes_B2/Bacidia_biatorina.htm

France, Forêt des Touches, alt. 1100 m, sur roche calcaire, Villard-de-Lans - Isère
26/3/2018

Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_B/Textes_B2/Bacidia_biatorina.htm

France, Forêt des Touches, alt. 1100 m, sur roche calcaire, Villard-de-Lans - Isère
26/3/2018

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