ITALIC 8.0

Placidiopsis tiroliensis Breuss

Linzer Biol. Beitr., 21: 595, 1989.

Synonyms:

Distribution: N - Frl (Breuss 1996b).

Description: Thallus squamulose, the squamules 0.7-3 mm broad, 0.25-0.4 mm thick, flattened, smooth, contiguous and densely aggregated, incised, the upper surface brownish, epruinose, the lower surface dark, attached by a dense mat of 4-5 μm thick, dark rhizohyphae. Upper cortex 10-20 μm thick, pseudoparenchymatous, with a thin to absent epinecral layer; medulla almost completely filled by algae; lower cortex poorly developed, more or less paraplectenchymatous. Perithecia globose, immersed in the squamules, to 0.3 mm across, without involucrellum. Exciple colourless only in very young perithecia, then dark throughout, of tangentially arranged, elongate cells; periphyses present around the ostiole, measuring 30-35 x 2.5-3.5 μm, interascal filaments absent; hymenial gel hemiamyloid. Asci 8-spored, clavate, thin-walled, I-, apically slightly thickened, with a small ocular chamber 65-75 x 17-22 μm. Ascospores 1-septate, not constricted at septum, hyaline, broadly ellipsoid, thin-walled, 13-17 x 9-11 μm. Photobiont chlorococcoid (Diplosphaera). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calciferous, mostly organic soil near and above treeline. The locality cited by Breuss (1996) is in Austria, but very close to the Italian border.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: extremely 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

Index Fungorum GBIF

W. O. Breuss (Wien). Herb. Breuss 669

Photo by W. O. Breuss (Wien). Herb. Breuss 669