Arthonia phlyctiformis Nyl.

Arthonia phlyctiformis Nyl.

Bot. Notiser: 163, 1853.

Synonyms: Arthothelium phlyctiforme (Nyl.) Arnold; Arthothelium taediosoides Giralt & Grube

Distribution: S - Pugl (Pinault, see photos).

Description: Thallus crustose, episubstratic, clearly lichenized, usually rather thick, continuous or finely rimose, whitish, without a distinct prothallus. Apothecia arthonioid, immarginate, black but sometimes white-pruinose, irregularly rounded, stellate or elongate and more or less branched, 0.1-0.3(-0.5) x 0.3-1.5(-2) mm, level with thallus. Proper exciple poorly developed; epithecium olivaceous brown, 10-15 μm high, K+ olive-green; hymenium colourless, c. 40-60 μm high, I+ blue turning blood-red, K/I+ blue; paraphysoids anastomosing, branched in upper part, c. 1 μm thick; hypothecium colourless to pale brown, 10-20 μm high. Asci 8-spored, broadly clavate to subglobose, semi-fissitunicate, with a large apical dome, a distinct ocular chamber, and a K/I+ bluish ring-structure, Arthonia-type. Ascospores submuriform to muriform, with 6-8 transverse and 1-2 longitudinal septa in each transverse segment, persistently hyaline, obovoid to ellipsoid, (23-)26-30(-33) x (9-)10-13 μm, always with a distinct, gelatinous sheath reacting I+ red and K/I+ blue. Pycnidia very rare, more or less hemispherical, black-brown. Conidia bacilliform, straight or slightly curved, (4-)5-7 x 1-1-5 μm. Photobiont chlorococcoid, small-celled. Spot tests: thallus K-, C-, KC-, P-. Chemistry: without lichen substances.

Note: apparently not rare along the eastern coast of the Iberian Peninsula, especially on acid-barked trees, and also known from France (Languedoc-Roussillon and Pyrénées-Orientales), this species also occurs in Mediterranean Italy.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: extremely rare

Dry mediterranean belt: extremely rare

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

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

Patrick Pinault

Italy, Puglia, Lecce, Lecce, Giardini Pubblici G. Garibaldi (formerly Villa della Lupa), on fallen branches
04.2023

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