ITALIC 8.0

Biatorella fossarum (Fr.) Th. Fr.

Lichenogr. Scand., 2: 397, 1874. Basionym: Lecidea fossarum Dufour ex Fr. - Lichenogr. Eur. Ref.: 364, 1831.

Synonyms: Biatora rousselii Durieu & Mont.; Biatorella rousselii (Durieu & Mont.) De Not.

Distribution: N - Ven, TAA (Nascimbene & al. 2022), Emil (Fariselli & al. 2020), Lig. C - Tosc. S - Si (Caniglia & al. 2005).

Description: Thallus crustose, pale grey, thin and inconspicuous, granulose and poorly delimited. Apothecia biatorine, 0.4-1(-1.1) mm across, pale orange-red to grey-brown, not constricted at base, with a rapidly convex disc, emarginate. Proper exciple poorly developed, of more or less parallel, colourless to pale yellow hyphae, I+ blue; epithecium almost colourless to pale orange-yellow, K-, with a layer of crystals; hymenium colourless to pale yellow, I+ deep blue; paraphyses richly branched and anastomosing in upper part, 1.5-2 µm thick in lower part, the apical cells 4-7 µm wide; hypothecium pale grey-yellow. Asci >100-spored, cylindrical to clavate, with a simple, K/I± faintly blue apical dome surrounded by weakly amyloid wall layers, Biatorella-type (see Hafellner & Casares-Porcel 1992). Ascospores 1-celled, hyaline, cylindrical, 8-13 x 2.3-3 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calciferous, often slightly decalcified soil in rather disturbed habitats; chiefly southern in Europe; closely related to B. hemisphaerica. Most Italian records must be checked against the latter species.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: extremely rare

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

P.L. Nimis CC BY-SA 04

TSB 38429

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (25743)
2003/02/14

P.L.Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (38429)
2008.02.23