ITALIC 7.0

Psorotichia allobrogensis Hue

Journ. Botanique, 10: 8, 1896.

Synonyms:

Distribution: S - Camp (Nimis & Tretiach 2004, Garofalo & al. 2010), Si (Nimis & al. 1994).

Description: Thallus crustose, areolate, homoiomerous, pseudoparenchymatous throughout. Areoles 0.2-0.4 mm wide, flat to slightly convex, separated by 0.1-0.3 mm wide fissures, black to dull dark green, epruinose, not granulose. Apothecia at first semi-immersed and urceolate, then sessile, 0.2-0.4 mm across, with a concave to flat, brownish yellow disc surrounded by a thick, smooth, thalline margin. Proper exciple poorly differentiated; epithecium orange-brown; hymenium colourless, I+ blue; paraphyses branched and anastomosing, with cylindrical cells; hypothecium colourless. Asci 8-spored, cylindrical-clavate, with a rather thick, not amyloid wall, without apical amyloid thickenings. Ascospores 1-celled., hyaline, broadly ellipsoid to subglobose 6-12 x 5-9 µm. Photobiont cyanobacterial, chroococcoid (Chroococcidiopsis), 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 poorly known species of steeply inclined surfaces of calcareous rocks with some water seepage after rain, mostly at relatively low elevations.

Growth form: Crustose

Substrata: rocks

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

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: very rare

Dry mediterranean belt: extremely 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

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

Herbarium: TSB (15769)
2003/03/12
identification not certain