ITALIC 7.0

Athallia vitellinaria (Szatala) ined.

. Basionym: Caloplaca vitellinaria Szatala - Annls Mus. natn. Hung., n.s., 7: 276, 1956

Synonyms:

Distribution: C - Sar (TSB 9635).

Description: Thallus not evident or crustose, orange, very much reduced and visible only around the apothecia, developing on silicicolous species of Candelariella, especially C. vitellina. Medulla I-. Apothecia zeorine, usually numerous, clustered, round to angular by mutual compression, (0.3-)0.5-1(1.5) mm across, with a flat to slightly convex, orange disc and a thin, slightly paler, only initially raised margin. Thalline exciple rich in algae, orange in outer part; proper exciple of radiating hyphae; epithecium golden brown to orange, K+ purple; hymenium colourless, 60-100(-125) μm high, I+ blue; paraphyses simple or branched in upper part, 2-2.5 μm thick at mid-level, the apical cells swollen, to 5 μm wide; hypothecium colourless, c. 30 μm high, I-. Asci 8-spored, cylindrical, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 2-celled, polarilocular, hyaline, ellipsoid to broadly ellipsoid, 9-15 x 5-8 μm, the equatorial thickening (“septum”) (3-)4-5(-6) μm, c. 1/3 of spore length. Photobiont chlorococcoid. Spot tests: thallus K- or K+ red, C-, KC-, P-; apothecia K+ red. Chemistry: unknown but probably apothecia and orange-pigmented parts of thallus (when present) with parietin (major), fallacinal, emodin, teloschistin and parietinic acid (minor).

Note: a species parasitic on the thallus of silicicolous Candelariella-species, especially Candelariella vitellina, widespread in Central and Southern Europe but apparently rare, perhaps confused with Athallia holocarpa. The species was provisionally combined into Athallia by Roux, but the combination is invalid.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras Candelariella-species

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: extremely rare

Montane belt: extremely rare

Submediterranean belt: extremely 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

Herbarium samples

Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0

TSB 9635

Courtesy Olivier Gonner - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A4/Athallia_vitellinaria.htm

Courtesy Olivier Gonner - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A4/Athallia_vitellinaria.htm