ITALIC 8.0

Psorotichia taurica (Nyl.) Vain.

Term. Füzetek, 22: 312, 1899. Basionym: Collemopsis taurica Nyl. - Flora, 69: 97, 1886

Synonyms: Porocyphus arnoldii (Heufl.) Arnold; Psorotichia arnoldii Heufl. non Körb.; Psorotichia tiroliensis Zahlbr.

Distribution: N - TAA (Dalla Torre & Sarnthein 1902, Schultz 2014, Nascimbene & al. 2022).

Description: Thallus crustose, black to brown-black, subgelatinous when wet, granulose to minutely areolate, forming 1-3 cm wide, irregular patches, pseudoparenchymatous throughout. Areoles 0.15-0.5 mm across, up to 0.3 mm thick, the surface finely granulose. Apothecia at fist semi-immersed and punctiform, then sessile, up to 0.25 mm across, with a blackish, urceolate, sometimes umbonate disc and a prominent, persistent thalline margin. Proper exciple thin; epithecium blue green to emerald green, K-; hymenium colourless or greenish in upper part, 80-100 µm high, usually with central intrusions of sterile hyphae forming a small umbo, I-; paraphyses slender, septate; hypothecium colourless. Asci 16-spored, cylindrical-clavate, with a rather thick, not amyloid wall, without apical amyloid thickenings. Ascospores 1-celled, hyaline, globose and 6-7 µm wide, or broadly ellipsoid and (5-)7-9(-10) x (3-)5-8 µm. Pycnidia immersed, broadly pyriform, (0.05-)0.1-0.125 mm across, unilocular or finally plurilocular. Conidia broadly ellipsoid, (2-)2.5-3.5 x 1.5-2 µm. Photobiont cyanobacterial, chroococcoid, of a few cells surrounded by a gelatinous sheath which is yellowish brown near the thallus surface. Spot tests: all negative. Chemistry: without lichen substances.

Note: a very poorly known species; ecological indicator values are tentative.

Growth form: Crustose

Substrata: rocks

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly sexual

On otherwise dry surfaces with short periods of water seepage after rain

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

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

Index Fungorum GBIF

Jason Hollinger - Source: https://www.waysofenlichenment.net/lichens/Psorotichia%20taurica

USA, Utah