ITALIC 8.0

Aspicilia valpellinensis B. de Lesd.

Bull. Soc. Bot. France, 59: 686, 1912.

Synonyms: Aspicilia cinerea var. chiodectonoides Anzi; Lecanora valpellinensis (B. de Lesd.) Zahlbr.

Distribution: N - Lomb, VA (Piervittori & Isocrono 1999).

Description: Thallus crustose, episubstratic, rimose-areolate, 0.2-0.5 mm thick, pale ash-grey, sometimes with a bluish tinge. Areoles 0.7-1(-1.5) mm wide, flat, angular, separated by narrow cracks, the fertile ones somewhat larger and sometimes slightly prominent. Cortex 25-35 µm thick, dark brown in upper part, colourless in lower part, overlain by a 15-20 µm thick epinecral layer; medulla white to ochraceous, I-; algal layer not extending below the hypothecium. Apothecia lecanorine-aspicilioid, immersed in the areoles, rarely solitary or 2-3, usually 5-15 per areole, punctiform to irregular in outline, 0.1-0.3 mm across, with a black disc and a thin, often indistinct thalline margin. Exciple 10-15 µm thick, I+ blue at the base and laterally; epithecium greenish to olive-brownish, 15-20 µm high, N+ emerald green; hymenium colourless, 110-120 µm high, I+ blue turning reddish; paraphyses submoniliform, the apical cells to 2.5 µm wide; hypothecium colourless, inspersed with oil droplets, 35-50 µm high. Asci 8-spored, cylindrical-clavate. Ascospores 1-celled, hyaline, broadly ellipsoid, 17-20(-25) x 9-13(-14) µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-. Chemistry: unknown, probably without lichen substances.

Note: a very poorly known species (see Nimis 1993: 106), found on calciferous schists, only known from the Alps (Scandinavian material belongs to A. supertegens: Nordin in litt.). Indicator values are tentative.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

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

Herbarium samples

Index Fungorum GBIF

Magnusson A. H. 1939. Studies in species of Lecanora, mainly the Aspicilia gibbosa group. Kungl. Svenska Vetenskaps-Akademiens Handlingar, ser. III, 17, .5: 1-182.