ITALIC 8.0

Polyozosia prominens (Clauzade & Vězda) S.Y. Kondr., Lőkös & Farkas

in Kondratyuk & al., Acta Bot. Hung., 62, 1-2: 103, 2020. Basionym: Lecanora prominens Clauzade & Vězda - Rev. Fac. Ciênc. Lisboa, 2, C-14: 49, 1966.

Synonyms:

Distribution: C - Tosc, Sar. S - Camp (Garofalo & al. 1999), Pugl (Nimis & Tretiach 1999).

Description: Thallus crustose, thinly episubstratic, finely rimose-areolate, chalky white to pale yellowish white, sometimes delimited by a dark prothalline line. Apothecia lecanorine, 0.3-1(-1.5) mm across, prominent, sessile and constricted at base, rounded or irregular in outline, sometimes confluent, with a dark brown to black, sometimes umbonate disc, and a thick, entire to crenulate, white to bluish white thalline margin. Epithecium brown, c. 15 μm high, with brownish crystals soluble in K; hymenium colourless, c. 60 μm high, I+ blue; paraphyses coherent, capitate; hypothecium colourless. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, (8-)10-14 x 5-7 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P- or P+ orange; apothecial margin always P+ bright orange. Chemistry: thallus or at least apothecial margin with pannarin.

Note: a calcicolous species, probably more widespread, at least in the mountains of Southern Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: rare

Montane belt: rare

Submediterranean belt: absent

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

P.L. Nimis CC BY-SA 4.0

TSB 22741

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

Herbarium: TSB (22741)
2001/12/09
apothecia

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

Herbarium: TSB (22741)
2001/12/09