ITALIC 7.0

Ochrolechia dalmatica (Erichsen) Boqueras

in Boqueras & al., Cryptogamie, Mycol., 20: 313, 1999. Basionym: Pertusaria dalmatica Erichsen - Rabenh. Krypt.-Flora, 9, 5, 1: 540, 1936.

Synonyms:

Distribution: N - Emil (Boqueras & al. 1999, Fariselli & al. 2020). C - Sar. S - Camp (Brunialti & al. 2013, Ravera & Brunialti 2013).

Description: Thallus crustose. episubstratic, sorediate, continuous to usually areolate-verrucose or bullate-tuberculate, grey-white, grey or grey-brown. sometimes delimited by a whitish prothallus. Soralia circular to irregular, mostly arising at the tip of warts, with a more brown hue than the thallus, at first well-delimited and concave with a distinct, raised thalline rim, finally convex and sometimes confluent, bearing granular soredia. Apothecia very rare, lecanorine, up to 3 mm across, with a concave to flat, brown, faintly pruinose disc, a distinct parathecial ring, and a thick, raised thalline margin. Proper exciple well-developed; epithecium pale brown; hymenium colourless, c. 300 µm high; hypothecium pale yellowish brown. Asci 4-6-spored, with thick, amyloid walls, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, 50-69 x 25-35 µm. Spot tests: thallus and apothecial margin K- C+ yellow, KC+ yellow, P-; thalline medulla C-; epithecium, soredia, and upper part of proper exciple C+ red. Chemistry: cortex with variolaric acid; epithecium, soredia, and upper part of proper exciple with gyrophoric (major) and lecanoric (minor) acids.

Note: a poorly understood, rarely collected lichen, which badly deserves further study. Indicator values are tentative. It is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c). The record from Venezia Giulia reported by Nimis (1993: 510) was due to a misidentification.

Growth form: Crustose

Substrata: bark

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: absent

Submediterranean belt: extremely rare

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

Harrie Sipman https://archive.bgbm.org/sipman/Zschackia/AegeanLichens/Ochrolechia.htm

Harrie Sipman

Greece
Source: https://archive.bgbm.org/sipman/Zschackia/AegeanLichens/Ochrolechia.htm