ITALIC 8.0

Verrucaria lecanoroides Servít

Preslia, 24: 361, 1952.

Synonyms:

Distribution: N - Lig.

Description: Thallus crustose, episubstratic, grey, up to 0.5 mm thick, incompletely rimose, the thin fissures delimiting 0.5-1 mm wide flecks with a somehow darker margin. Algal layer continuous; medulla whitish, without a dark basal layer. Perithecia black, immersed in the thallus and projecting only with the distinctly flattened apical part (somehow resembling apothecia). Involucrellum black, 70-100 µm thick, extending to base level; exciple globose, 0.3-0.4 mm across, the wall colourless, throughout; hamathecium of c. 40 µm long periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, (25-)26-31(-34) x 11-13(-15) µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this characteristic, Aspicilia-like species is known only from the type collection. According to Breuss (2016) it probably constitutes a good species. The ecological indicator values are tentative.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: absent

Dry mediterranean belt: very rare

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

Index Fungorum GBIF

Source: • • Breuss O. 2016. Über einige von Miroslav Servít beschriebene Verrucaria-Arten (lichenisierte Ascomycota, Verrucariaceae). Herzogia, 29

Source: Servít M. Nové a málo známé druhy z čeledí Verrucariaceae a Dermatocarpaceae. Preslia 24: 245-390, 1952, Tab. 3 – Public Domain