ITALIC 8.0

Parvoplaca servitiana (Szatala) Arup, Søchting & Frödén

Nord. J. Bot., 31: 49, 2013. Basionym: Caloplaca servitiana Szatala in Rechinger - Denkschr. Kaiserl. Akad. Wiss. Wien, math. naturw. Kl, 105: 51, 1943.

Synonyms:

Distribution: S - Camp (Ravera & Brunialti 2013b, Ravera & al. 2015c).

Description: Thallus crustose, thinly episubstratic, dark grey, continuous to cracked. Apothecia zeorine/biatorine, brown-black, up to 1 mm across, with a flat to convex disc and a usually darker, finally sometimes excluded margin turning grey when wet. Thalline exciple 80-100 μm wide, usually hidden on lower side of the apothecial margin; proper exciple well-developed, 60-100 μm wide, dark grey and corticate in outer part, colourless within, the pigmented parts K+ and N+ violet; epithecium grey, K+ and N+ violet; hymenium colourless, c. 80 μm high; paraphyses sparingly branched, with swollen apical cells; hypothecium colourless. Asci 8-spored, clavate, 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 14-15.5 x 5.5-7.3 μm, the equatorial thickening (“septum”) 5.5-8 μm (up to c. 1/2 of spore length). Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-. Epithecium and outer part of exciple K+ and N+ violet. Chemistry: thallus without lichen substances; apothecia with the Sedifolia-grey pigment (without anthraquinones).

Note: a black fruited epiphytic species described from Greece, included in the Italian red list of epiphytic lichens as “Critically Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: very 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

Index Fungorum GBIF

Jan Vondrak

HOLOTYPE Source: http://botanika.bf.jcu.cz/lichenology/index.php?pg=8&cat=37&idx=793

Jan Vondrak

Herbarium: HOLOTYPE
Source: http://botanika.bf.jcu.cz/lichenology/index.php?pg=8&cat=37&idx=793