ITALIC 7.0

Verrucula elegantaria (Zehetl.) Nav.-Ros. & Cl. Roux

in Navarro-Rosinés & al., Bull. Soc. linn. Provence, 58: 156, 2007. Basionym: Verrucaria elegantaria Zehetl. - Nova Hedwigia, 29: 729, 1978.

Synonyms:

Distribution: N - Frl (vidi!), Ven (vidi!), TAA (Navarro-Rosinés & al. 2007, Nascimbene & al. 2022), Piem (TSB 34781).

Description: Thallus crustose, 0.15-0.3 mm thick, growing on the thalli of Rusavskia elegans, consisting of elongated areoles whose shape corresponds more or less with that of the host thallus. Areoles grey-brown, more or less pruinose, flat to convex, irregularly folded, the margins concolorous with upper surface. Cortex 6-11 μm thick, of 1-3 layers of pale brown cells, covered with a discontinuous, 2-6 μm thick epinecral layer; medulla white, 60-220 μm thick, prosoplectenchymatous, I-. Perithecia black, 0.2-0.3 mm in diam., globose, entirely or ¾ immersed in the Thallus. Involucrellum absent; exciple paraplectenchymatous, 22-30 μm thick at base, colourless except around the ostiole; hymenium colourless, I+ reddish; hamathecium of periphyses along the ostiolar channel, pseudoparaphyses in upper part of the perithecium, and paraphyses disappearing early; periphysoids (10-)18-27 x 2-3.5 μm. Asci 8-spored, clavate, bitunicate, with a thin tholus reacting I-, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, 12-14 x 6-7 μm. Pycnidia rare, black, partially immersed, Dermatocarpon-type, the wall colourless except at the brown apex. Conidia simple, bacilliform, 3.5-5.5 x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a lichenicolous lichen growing on the thalli of Rusavskia elegans; certainly more widespread in the Alps

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras Rusavskia elegans

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: absent

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

P.L. Nimis CC BY-SA 04

TSB 34781

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

Herbarium: TSB (34781)
2002/02/01

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

Herbarium: TSB (34781)
2002/02/01
overgrowing the host, Xanthoria elegans