ITALIC 7.0

Bacidina adastra (Sparrius & Aptroot) M. Hauck & V. Wirth

Herzogia 23, 1: 16, 2010. Basionym: Bacidia adastra Sparrius & Aptroot - Lichenologist, 35: 275, 2003

Synonyms: Bacidina delicata auct. p.p. non (Leight.) V. Wirth & Vězda

Distribution: N - Emil (Nascimbene & al. 2021).

Description: Thallus crustose to subleprose, bright yellow-green, turning grey-green or brown-green in the herbarium, often forming very large patches, entirely or partly disintegrating into loosely arranged, 30-50 μm wide goniocysts, which are at first gathered into 0.1-0.2 mm wide, discrete and punctiform soralia-like patches, but soon cover the whole thallus, forming an up to 1 mm thick, more or less cracked layer. Apothecia rare, biatorine, sessile, constricted at base, (0.2-)0.4-0.7 mm across, with a flat, pale pink to dark blue-black, often only partly coloured disc, the darkened parts with an aeruginose-blue pigment in section; proper margin conspicuous, 0.1-0.2 mm wide, pinkish with aeruginose-blue or dark brown flecks. Proper exciple well-developed, 25–35 μm thick, the cells with isodiametric to slightly ellipsoid lumina, colourless but often aeruginose-blue or orange-brown in upper parts, without crystals; epithecium colourless to aeruginose-blue or orange-brown, 5-10 μm thick, K- or the coloured parts K+ intensifying; hymenium colourless or orange-brown, K+ intensifying brown-purplish, 60-70 μm high; paraphyses c. 1 μm thick at base, the apical cells up to c. 5 μm wide; hypothecium colourless or very pale straw-coloured, 40-60 μm high. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass) never penetrating through the entire d-layer, the wall K/I-, but the thin outer gel K/I+ blue, Bacidia-type. Ascospores 2-10-septate, hyaline, acicular, straight or slightly curved, 40-50 x 0.9-1.2 μm. Pycnidia rare, white, immersed, c. 0.1 mm across. Conidia thread-like, 35-50 x 1-1.2 μm, with 4-6 indistinct septa. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: described from the Netherlands and known from Belgium, England and Germany (Sparrius & Aptroot 2003), bound to anthropized environments where it usually grows on acid or neutral, eutrophicated bark.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: very rare

Padanian area: very rare

Humid submediterranean belt: very rare

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

Index Fungorum GBIF

Laurens Sparrius CC BY-SA NC - Source: https://www.verspreidingsatlas.nl/7205

The Netherlands

J. Nascimbene CC BY-SA 4.0

Italy, Emilia-Romagna

J. Nascimbene CC BY-SA 4.0

Italy, Emilia-Romagna

J. Nascimbene CC BY-SA 4.0

Italy, Emilia-Romagna