ITALIC 8.0

Sarcogyne nimisii K.Knudsen, Kocourk. & Hodková

Herzogia, 36, 1: 65, 2023

Synonyms:

Distribution: N - VG (Knudsen & al. 2023).

Description: Thallus endo- to chasmolithic, with densely intricate, mostly 2 μm wide hyphae, forming pale curds of hyphae and crystals, the type with associated cyanobacteria. Apothecia lecideine, round, dispersed, broadly attached, not replicating by division, 0.2- 0.8 mm across, with a flat to slightly convex, black but densely pruinose disc which turns red-brown when wet, and a densely white-pruinose, not incised proper margin (dark brown when wet). Proper exciple of radiating, 1-2 μm thick hyphae, the apices unexpanded, reddish-brown, inspersed with (60-)80-120 μm wide crystals; epithecium reddish brown, <10 μm high; hymenium colourless, 120-130(-140) μm high, the hymenial gel hemiamyloid, K/I+ light blue fading to light red; paraphyses coherent, simple to sparingly branched, regularly septate, c. 1 μm thick, the apical cells unexpanded; subhymenium indistinct, c. 20 μm high, IKI+ light blue fading to light red; hypothecium merged with medulla, obscure with crystals, the hyphae 1-2 μm thick. Asci >100-spored, cylindrical-clavate, strongly thickened at apex, the apical dome K/I-, the outer coat K/I+ blue, 90-100 x 10-17 μm, Ascospores 1-celled, hyaline, broadly ellipsoid and c. 4 x 3 μm, or ellipsoid and 3-4 x c. 2 μm. Pycnidia not observed. Photobiont chlorococcoid, of a few cells mostly present inside the rock around the apothecia. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a recently described calcicolous species, hitherto known only from the Trieste coast, which surprisingly clusters together with a group of American species (see Knudsen & al. 2023).

Growth form: Crustose endolithic

Substrata: rocks

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: very rare

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; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (35083)
2002/02/22

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

Herbarium: TSB (35083)
2002/02/22

Kerry Knudsen

TSB 35083