ITALIC 7.0

Bacidina chloroticula (Nyl.) Vězda & Poelt

in Vezda, Folia Geobot. Phytotaxon., 25: 432, 1991. Basionym: Lecidea chloroticula Nyl. - Flora, 60: 504, 1878.

Synonyms: Bacidia chloroticula (Nyl.) A.L. Sm.; Bacidia lehriana Erichsen; Bacidia neglecta Vězda; Bacidia paulula Erichsen; Bacidia perminutula (Nyl.) H.Olivier; Bacidia subchlorotica (Nyl.) Flagey; Bacidina neglecta (Vězda) Vězda

Distribution: N - Ven (Thor & Nascimbene 2007), Lomb (UPS-L166832). S - Camp (CLU 17865), Cal (Puntillo 1996, 2000).

Description: Thallus crustose, thin, ecorticate, continuous, rimose or warted, grey-green, smooth to granulose, usually not producing goniocysts. Apothecia biatorine, usually numerous, 0.15-0.25 mm across, whitish, pale yellow or pale grey, with a flat to slightly convex, epruinose disc, and a usually paler, white or very pale yellow, persistent proper margin. Proper exciple 4–6 cells thick, laterally 24-33 μm wide, without crystals, of very thin-walled (0.5-1 μm), not distinctly radiating hyphae, the outer rim colourless or very pale brown in uppermost part, the medullary part colourless. Epithecium colourless or rarely very pale brown and in this case K+ purple, indistinctly delimited from the hymenium; hymenium 30-40(-50) μm high, mostly colourless; paraphyses mostly simple, 1.5-2 μm thick at mid-level, the apical cells clavate or only slightly thickened, to 3-4(-6) μm wide; hypothecium poorly developed, colourless. 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 (0-)1-3-septate, hyaline, needle-like, straight to sigmoid, twisted in the asci, (17-)21-34(-39) x 0.9-1.8 μm. Pycnidia immersed, colourless. Macroconidia filiform, curved and non-septate, microconidia lageniform, 3.0–4.0 × 1.0–1.5 µm. Photobiont chlorococcoid, the cells 5-12(-14) μm wide. Spot tests: thallus and apothecia K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: a mainly temperate to southern boreal species found on tree stumps, rotten woodwork, rusted iron, plant remnants, ground-cover plastic, rubber waste, coniferous twigs and needles, twigs of Vaccinium myrtillus, decaying vascular plant remnants, moribund bryophytes, pebbles and boulders of siliceous rock, mostly near the ground (Ekman 2023); certainly overlooked, and perhaps more widespread in Italy below the alpine belt, including in the Alps.

Growth form: Crustose

Substrata: rocks, bark, lignum, and leaves

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: extremely rare

Padanian area: absent

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

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Clearwater Valley, west shore of Clearwater Lake, Wells Gray Provincial Park Phyllite rocks on lake shore, periodically inundated 2006-11-03

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

Herbarium: TSB (15121)
2001/11/22

Pier Luigi Nimis CC BY-SA 4.0

TSB 41676

Pier Luigi Nimis CC BY-SA 4.0

TSB 41677