ITALIC 7.0

Verrucaria aberrans Garov.

Tent. Disp. Lich. Lang.: 11, 1864.

Synonyms:

Distribution: N - Lomb.

Description: Thallus crustose, episubstratic, c. 0.01 mm thick, continuous to finely rimose, dark olive-green to olive-brown, slightly shiny, subgelatinous when wet. Upper layer of cortex colourless; medulla without a black basal layer. Perithecia black, 0.2-0.3 mm across, hemispherically projecting, covered by a thalline layer in lower part. Involucrellum adpressed to exciple, reaching down to maximum half of the perithecium; exciple c. 0.2 mm wide and 1.8 mm high, the wall dark throughout; hamathecium of 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, oblong-ellipsoid, 14-25(-31) x (9-)11-14 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a very poorly known silicicolous species, also reported from Germany (Wirth & al. 2010); the type material is from granite in a humid, shaded Castanea-woodland. See also Nimis (1993: 731).

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: 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

Index Fungorum GBIF

G. Gibelli, in S. Garovaglio, 1865 Tentamen Dispositionis Methodicae Lichenum In Longobardia Nascentium. Mediolanum