ITALIC 7.0

Karstenia chrysophaea (Pers.) Coppins, Aptroot & P.F. Cannon

in Cannon & al., Revisions of British and Irish Lichens, 38: 51, 2024. Basionym: Peziza chrysophaea Pers. - Icon. Descr. Fung. 2: 17, tab. 8, fig. 1-2, 1798.

Synonyms: Lecidea chrysophaea (Pers.) Nyl.; Ramonia chrysophaea (Pers.) Vězda; Stictis chrysophaea (Pers.) Pers.

Distribution: N - Frl (Gambera & Tretiach 2003, Tretiach 2004). C - Sar (Rizzi & al. 2011, Di Nuzzo & al. 2022)

Description: Thallus crustose, very thin, continuous, poorly evident, finally often disappearing. Apothecia 0.4-0.7 mm across, 0.15–0.25 mm high, urceolate, at first immersed and perithecioid, with the exciple hiding the disc except for a minute, to 0.5 mm wide pore, later erumpent and with an exposed, pinkish to pale grey-brown disc surrounded by a thick, inrolled proper margin. Proper exciple well developed laterally, the outer part of small, thin-walled, angular cells, the inner part with rectangular cells ending in periphysoids; hymenium colourless, 90-120 µm high, I+ blue at least in upper part; paraphyses slender, simple, slightly swollen at apex; hypothecium colourless. Asci 8-spored, cylindrical-clavate, with a single, thin, K/I- wall layer, and an amyloid exoascus with a ring structure. Ascospores 8-14-septate, hyaline, needle-like to cylindrical, 45-75 x 3-4(-5) µm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a Mediterranean-Atlantic species found on the soft bark of old trees, especially Ulmus, in humid and shaded situations; inconspicuous and easily overlooked, but certainly not common. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

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

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: extremely rare

Humid mediterranean belt: extremely 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

P.L. Nimis CC BY-SA 4.0

(Sine numero)

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

Herbarium: TSB (sine numero)
2002/03/27