ITALIC 8.0

Ochrolechia crozalsiana Clauzade & Vězda

Acta Mus. Siles., ser. A, 19: 25, 1970.

Synonyms: Ochrolechia erichsenii auct. non Hafellner & Türk; Pertusaria tumidula auct. non Erichsen?

Distribution: N - Lig (Giordani & Brunialti 2000). C - Tosc, Sar (Kukwa 2011). S - Cal (Puntillo 1996), Si (Grillo 1998, Grillo & Caniglia 2004, Kukwa 2011).

Description: Thallus crustose, episubstratic, to 2 mm thick, whitish, grey-white or beige, warted-areolate, sorediate, the areoles wart-like, strongly convex to subglobose, often constricted at base, contiguous, with irregular, convex, often confluent, externally pale brownish-grey to brown, internally greenish-grey soralia bearing granulose soredia. Apothecia lecanorine, up to 5 mm across, round to irregular in outline, with a pruinose, concave, initially almost punctiform disc and a distinct, pruinose parathecial ring, which are largely hidden by a thick, prominent pruinose, sometimes sorediate thalline margin. Thalline exciple corticate, the cortex thin, but well-developed, not expanded at base; proper exciple well-developed, up to 300 µm thick; epithecium pale brown, with crystals, C+ red; hymenium colourless, up to c. 150 µm high; paraphyses thin, slender, densely branched and anastomosing; hypothecium colourless. Asci 8-spored with thick, amyloid walls, without recognizable apical structures, Pertusaria-like. Ascospores 1-celled, hyaline, ellipsoid, 60-70 x 40-50 µm. Photobiont chlorococcoid. Spot tests: epithecium, soredia, thalline margin and medulla of apothecia K-, C+ red, KC+ red, P-; medulla of thallus C-, KC-. Chemistry: gyrophoric acid (major) and lecanoric acid (minor); apothecia with additional alectoronic acid.

Note: a rare, Mediterranean silicicolous species known from France, Italy and perhaps the Iberian Peninsula; it is related to O. tartarea, but is morphologically and chemically different, and has a montane-Tyrrhenian distribution in Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely 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

P.L. Nimis CC BY-SA 4.0

TSB 15491

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

Herbarium: TSB (15491)
2001/12/10

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

Herbarium: TSB (15491)
2001/12/10
thallus with soredia

P.L. Nimis CC BY SA 4.0

TSB 15491

Detail from: https://gzu.jacq.org/GZU000291959

GZU000291959 - Collector Clauzade,G. et al. Vězda, A.: Lichenes Selecti Exsiccati 893 Date 1969-06-28 Location France / Corse Label Gallia – Corsica. Distr. Piedicroce: Prope pagum Piedipartino ; Alt. 700 m Habitat Ad saxa granitica in silva clara Castanearum.