ITALIC 8.0

Polyblastia forana (Anzi) Arnold

Flora, 45: 56, 1862. Basionym: Thelotrema foranum Anzi - Cat. Lich. Sondr.: 105, 1860.

Synonyms: Verrucaria forana (Anzi) Nyl.; Verrucaria pallidelutea Garov.

Distribution: N - TAA, Lomb.

Description: Thallus crustose, endosubstratic, continuous, pale grey, often poorly evident. Perithecia black, globose, 0.15-0.2 mm across, half immersed, leaving pits in the rock when they fall out. Involucrellum rather thick, dimidiate; exciple 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, K/I–, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores submuriform, with 3-4 transverse septa and (0-)1-2 longitudinal septa, hyaline, ellipsoid, with rounded ends, 21-27 x 10-14 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: this rarely collected lichen growing on calcareous pebbles in upland areas is worthy of further study.

Growth form: Crustose endolithic

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: very rare

Subalpine belt: extremely 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

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5

(info)

Solar irradiation:

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5

(info)

Aridity:

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5

(info)

Eutrophication:

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(info)

Poleotolerance:

0

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3

(info)

Altitudinal distribution:

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6

(info)

Predictive model

Index Fungorum GBIF