ITALIC 8.0

Pyrenopsis triptococca Nyl.

Flora, 70: 129, 1881.

Synonyms:

Distribution: C - Tosc, Laz, Sar (TSB 11728). S - Cal (Puntillo 1996), Si (Ottonello & al. 2011).

Description: Thallus crustose, episubstratic, slightly gelatinous when wet, dark reddish brown to brownish black, granulose, the granules aggregated into irregular, 0.15-0.75 mm wide, smooth to verruculose, flat to slightly convex areoles separated by thin fissures, the central ones often subcoralloid, the peripheral ones sometimes slightly elongated and radiating. Thallus anatomy homoiomerous and paraplectenchymatous throughout, with a network of 2-3 µm thick hyphae enclosing the photobiont cells. Apothecia pycnoascocarps, immersed, 0.2-0.45 µm across, at first almost perithecioid with a pore-like disc, then with a slightly expanded, black, concave disc and a thin, granulose thalline margin. Proper exciple cupuliform, prosoplectenchymatous, 7-10 µm wide; epithecium yellowish brown to orange-brown, 5-12 µm high; hymenium colourless, 90-120 µm high, I+ blue turning red-brown, K/I+ blue; paraphyses simple or sparingly branched and anastomosing in upper part, more or less constricted at septa, 2-3 µm thick, the apical cells capitate; subhymenium colourless, 30-60 µm high, thicker in central part. Asci 8-spored, subcylindrical to subclavate, the wall I+ blue, with an apical amyloid tholus surrounded by a strongly amyloid outer gelatinous sheath. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, 9-13(-15) x 7-9 µm. Pycnidia immersed, globose. Conidia ellipsoid, c. 3 x 1 µm. Photobiont cyanobacterial, chroococcoid, the cells single or clustered, measuring 7-11 x 4-7 µm, surrounded by reddish-violet (at the periphery) to colourless (in inner parts) gelatinous sheaths. Spot tests: all negative. Chemistry: without lichen substances.

Note: on basic siliceous rocks, especially basalt, in sunny seepage tracks.

Growth form: Crustose

Substrata: rocks

Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)

Reproductive strategy: mainly sexual

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

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: rare

Dry mediterranean belt: rare

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

Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0

TSB 11728

Pier Luigi Nimis - Department of Life Sciences, University of Trieste - CC BY-SA 4.0

TSB 11728