ITALIC 7.0

Verrucula coccinearia (Zehetl.) Nav.-Ros. & Cl. Roux

in Navarro-Rosinés & al., Bull. Soc. linn. Provence, 58: 154, 2007. Basionym: Verrucaria coccinearia Zehetl. - Nova Hedwigia, 29: 729, 1978.

Synonyms:

Distribution: N - Piem (TSB 33973). C - Abr (Nimis & Tretiach 1999, Gheza & al. 2021).

Description: Thallus crustose, areolate, grey to brownish grey, forming 0.6-1.6(-3) mm wide patches on the thalli of Caloplaca coccinea. Areoles scattered or forming small clusters, (0.1-)0.2-0.5(-0.8) mm wide, 0.24-0.32 mm thick, flat to rarely convex, usually epruinose. Cortex thin, of 1-2 layers of pale grey-brown cells, with or without an epinecral layer; medulla white, rich in crystals, at least in lower part I+ pale blue-violet. Perithecia black, 0.16-0.2 mm across, globose, immersed in the thallus, 1-3(-5) per areole. Involucrellum absent; exciple paraplectenchymatous, colourless except around the ostiole; hymenium colourless, I+ reddish; hamathecium of periphyses along the ostiolar channel, pseudoparaphyses in upper part of the perithecium, and paraphyses disappearing early. Asci 8-spored, clavate, bitunicate, with a thin tholus reacting I-, Verrucaria-type. Ascospores 1-celled, hyaline, globose or subglobose, (8.5-)10-12.5 x 7-9.5 μm. Pycnidia black, immersed, Dermatocarpon-type, c. 0.1 mm across, the wall colourless except at the brown apex. Conidia simple, bacilliform, 4-6 x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on the thalli of Caloplaca coccinea in upland areas; overlooked and certainly more widespread in the Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras Caloplaca coccinea

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: extremely 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

Index Fungorum GBIF

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

Herbarium: TSB (25189)
2001/12/03
on the host, Caloplaca nubigena