ITALIC 7.0

Hymenelia similis (A. Massal.) M. Choisy

Bull. Mens. Soc. Linn. Lyon, 20: 133, 1951. Basionym: Pinacisca similis A. Massal. - Neagen. Lich.: 5, 1854.

Synonyms: Aspicilia isabellina De Not. ex Jatta; Aspicilia similis (A. Massal.) Anzi; Ionaspis similis (A. Massal.) Jatta; Lecanora carneopallens Nyl.; Lecanora similis (A. Massal.) Nyl.

Distribution: N - Ven (Lazzarin 2000b), TAA (Nascimbene & al. 2022), Lomb, Piem (Isocrono & al. 2004), Emil (Fariselli & al. 2020), Lig. C - Tosc, Sar. S - Camp (Garofalo & al. 1999), Si (Nimis & al. 1994).

Description: Thallus crustose, endosubstratic to thinly episubstratic, continuous or finely rimose- areolate, whitish, pale grey or pale yellow. Apothecia circular in outline, 0.3-1(-1.2) mm across, at first immersed, then sessile, with a flat, whitish to pinkish grey disc, and a thick, smooth, usually persistent, rarely finally indistinct margin. Proper exciple colourless; epithecium pale yellow to orange-yellow, N-; hymenium colourless; paraphyses coherent, branched and anastomosing, submoniliform in upper part, the apical cells slightly swollen; hypothecium colourless. Asci 8-spored, cylindrical-clavate, the outer wall K/I+ blue, but the inner walls and apical dome K/I-. Ascospores 1-celled, hyaline, ellipsoid, 18-25 x 15-18 mm. Photobiont chlorococcoid (Asterochloris), the cells <15 µm wide. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on shaded and steeply inclined surfaces of calciferous rocks, especially limestone and dolomite, descending to low altitudes in humid, coastal areas; probably more frequent in Southern Italy than the few records would suggest.

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: very rare

Oromediterranean belt: very rare

Montane belt: rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: very rare

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

Domenico Puntillo - CC BY-SA 4.0

Herbarium: CLU

P.L. Nimis CC BY-SA 04

TSB 7439

Pier Luigi Nimis - CC BY-SA 4.0

TSB 7439

Pier Luigi Nimis - CC BY-SA 4.0

TSB 7439

Pier Luigi Nimis - CC BY-SA 4.0

TSB 7439