ITALIC 7.0

Verrucaria elevata (Nyl.) Zschacke

Rabenh. Krypt.-Fl., ed. 2, 9, 1: 287, 1933. Basionym: Lithocia viridula var. elevata Nyl. - Verh. zool.-bot. Ges. Wien, 32: 172, 1882.

Synonyms: Verrucaria macrostomoides Servít

Distribution: N - Lig.

Description: Thallus crustose, episubstratic, 0.25-0.45 mm thick, rimose-areolate, brown to brown-black, greenish brown when wet, the areoles 0.5-0.8 mm wide, flat, smooth to uneven, acutely angular, often separated by wide fissures. Cortex very poorly developed; medulla white to brown (especially around the perithecia), but without a black basal layer. Perithecia black, 1-3 per areole, almost completely immersed, the apex 0.2-0.3 mm across, flat to slightly convex. Involucrellum black, 50-80 μm thick laterally, sometimes 80-100 μm thick near the ostiole, reaching to base-level; exciple globose to broadly pyriform, 0.2-0.4 mm across, the wall brown throughout; hamathecium of periphyses and periphysoids measuring 30-40 x c. 2 μm, 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, 17-21 x (8-)9-12 μm. Pycnidia small, black, immersed. Conidia bacilliform, straight, 7-9 x c. 1 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a poorly known species, most frequent on calciferous schists, superficially similar to V. macrostoma, reported from a few localities in Central Europe and the Alps. For a good description see Breuss (2008).

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: very 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

Index Fungorum GBIF

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

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