ITALIC 8.0

Porpidia trullisata (Kremp.) Körb.

Syst. Lich. Germ.: 221, 1855. Basionym: Diplotomma trullisatum Kremp. - Flora, 36: 442-444, 1853.

Synonyms: Lecidea euspeirea Nyl.; Lecidea speirea f. trullisata (Kremp.) Stein; Lecidea speirea var. trullisata (Kremp.) Arnold; Lecidea trullisata (Kremp.) Anzi

Distribution: N - TAA (Nascimbene & al. 2022), Piem (Isocrono & al. 2004), VA (Piervittori & Isocrono 1999).

Description: Thallus crustose, episubstratic, to 2.5 mm thick, chalky white to pale grey, continuous to rimose-areolate. Medulla white, I- (rarely I+ pale blue). Apothecia lecideine, black, 0.5-2.5(-3.5) mm across, at first immersed, but soon broadly sessile, with a strongly bluish-pruinose, flat to strongly convex disc, and a less pruinose or epruinose, thick but soon excluded proper margin. Proper exciple thin, black-brown throughout, K-, continuous with hypothecium; epithecium brownish green to green-black, 15-20 µm high; hymenium very pale yellowish green to colourless, 80-120 µm high; paraphyses strongly coherent, branched and anastomosing in upper part, 1.5-2.2 µm thick at mid-level, the apical cell to 3.5 µm wide; hypothecium brown-black. Asci 8-spored, elongate-clavate, with a thin, outer amyloid layer and a thickened tholus penetrated by a pore, the sides of which stain I/KI+ deep blue, Porpidia-type. Ascospores 1-celled, hyaline, ellipsoid 10-16(-21) x 5-9(-11) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; medulla sometimes K+ yellow, P+ pale orange-yellow. Chemistry: medulla with stictic acid (usually traces).

Note: on north-facing, steeply inclined surfaces of weakly calciferous rocks with optimum above treeline, reaching the nival belt; apparently restricted to the Alps in Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: very 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

Serge Poumarat - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Porpidia_trullisata.htm

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC