ITALIC 7.0

Verrucaria confluens A. Massal.

Symmicta Lich: 77, 1855. nom. illegit. non (Weber) F.H. Wigg.

Synonyms: Verrucaria muralis var. confluens (A. Massal.) Körb.

Distribution: N - Ven (Lazzarin 2000b), Lomb, Emil (Fariselli & al. 2020), Lig (GDOR 23).

Description: Thallus crustose, thinly episubstratic, whitish to brown, areolate. Cortex usually without pigment, or with a dilute brown pigment. Perithecia black, forming 0.2.0.4 mm wide projections, often merging together into small clumps. Involucrellum very thick, reaching down 1/3-1/2 of the perithecium, adpressed to or slightly diverging from exciple; exciple 0.2-0.4 μm across, the wall colourless to brownish at base; 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, ellipsoid, 18-25 x 8-14 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: according to Breuss (2002) this species, which has been often considered to be a synonym of V. muralis, differs in the thicker thallus and the crowded perithecia with a thick involucrellum. The species has no valid name.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: very rare

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

Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0 d saxa et muros Patavii, Vicetiae, et circa Oliero in ditione Bassanensi. Trevisan Lichenotheca Veneta 189

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

d saxa et muros Patavii, Vicetiae, et circa Oliero in ditione Bassanensi.
Trevisan Lichenotheca Veneta 189

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

d saxa et muros Patavii, Vicetiae, et circa Oliero in ditione Bassanensi.
Trevisan Lichenotheca Veneta 189

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

d saxa et muros Patavii, Vicetiae, et circa Oliero in ditione Bassanensi.
Trevisan Lichenotheca Veneta 189

Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain

Photo by Maria Zardini, Museo di Storia Naturale di Venezia CC BY-SA 4.0

d saxa et muros Patavii, Vicetiae, et circa Oliero in ditione Bassanensi.
Trevisan Lichenotheca Veneta 189