ITALIC 8.0

Biatora flavopunctata (Tønsberg) Hinter. & Printzen

in Hinteregger, Bibl. Lichenol., 55: 86, 1994. Basionym: Lecanora flavopunctata Tønsberg - Sommerfeltia, 14: 162, 1992.

Synonyms: Myrionora flavopunctata (Tønsberg) S.Y. Kondr.

Distribution: N - Frl (Hinteregger 1994, Printzen 1995, in Austrian terr., near the border), Piem (TSB 33253), Lig.

Description: Thallus crustose, endo- to episubstratic, whitish to greenish grey, greyish green, pale yellow or yellowish grey, forming up to 1.5(-2) cm wide patches, continuous to usually areolate, sorediate, sometimes delimited by a poorly evident, whitish prothallus, the areoles sparse or contiguous, rounded to elongate, flat to convex, up to 0.2(-0.4) mm wide, the continuous parts weakly tuberculate, rimose. Soralia central or marginal on areoles or tubercles, pale yellow to greenish yellow, at first well-delimited and punctiform, (0.1-)0.2-0.4(-0.5) mm across, later more or less confluent, the soredia farinose, 10-20(-25) μm in diam., with a distinct wall, very rarely gathered into 30-55 µm qwide consoredia. Apothecia rather rare, biatorine, adnate, 0.2-0.4(-0.55) mm across, pale brown to flesh-coloured, sometimes with a yellow tinge, slightly convex, without a distinct thalline margin. Proper exciple colourless or brownish, of conglutinated, radiating hyphae, without crystals or with a few crystals in outer part; epithecium straw-coloured to colourless, with a minutely granular epipsamma dissolving in K; hymenium colourless, 30-45 μm high, with large crystals not dissolving in K, I-; paraphyses coherent, simple to sparingly branched, 1-1.5 μm thick at mid-level, the apical cells hardly swollen, up to 2.5 μm wide; hypothecium colourless to pale yellow, 40-70 μm high, K/I+ blue. Asci 8-spored, clavate, Biatora-type, 22-31 x 7-8.5 µm. Ascospores 1-celled to rarely 1-septate, hyaline, mostly narrowly ellipsoid, sometimes slightly curved, 7.5-11(-13.5) x 2.5-4(-5) μm. Pycnidia very rare, inconspicuous, immersed, 30-55 µm across. Conidia bacilliform, 5-7.5 x 0.7-1 µm. Photobiont chlorococcoid, the cells 9-12(-18) μm wide. Spot tests: thallus and soralia K+ yellow, C+ yellowish, P-. Chemistry: atranorin, usnic acid, isousnic acid, variable amounts of stictic acid, traces of cryptostictic acid, flavopunctata-unknown (traces), possible traces of other unidentified terpenoids.

Note: a probably boreal-montane species found on twigs of subalpine shrubs, especially Rhododendron ferrugineum; certainly much more widespread in the Alps.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: rather common

Oromediterranean belt: absent

Montane belt: 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

Herbarium samples

Index Fungorum GBIF

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB 31416

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB 31416