Thelopsis corticola (Coppins & P. James) Sanderson & Ertz

Thelopsis corticola (Coppins & P. James) Sanderson & Ertz

in Ertz & al., Lichenologist ,53: 57, 2021. Basionym: Opegrapha corticola Coppins & P. James - Lichenologist, 11: 162, 1979.

Synonyms:

Distribution: C - Tosc, Laz.

Description: Thallus crustose, thinly episubstratic or partially endosubstratic, grey green in shade, pale brown in exposed situations, sorediate, usually without a distinct prothallus. Soralia ochraceous yellow to pale grey-brown, turning cream-coloured in the herbarium, at first punctiform, 0.2-0.7 mm across, later often confluent into 2-3 mm wide, irregularly shaped, flat to convex sorediate patches, with finely granulose soredia. Perithecia rare, scattered, immersed in the thallus with usually only the upper part of the perithecia visible, sometimes laterally covered by a thalline layer, 0.4-0.6 mm across, pale reddish brown to dark brown, often darker around the ostiole. Exciple colourless to yellowish, c. 30-40 µm thick laterally, becoming thicker (60-70 µm) around the ostiole, of hyphae with thick gelatinized walls, I-, K/I-; hymenium colourless, not inspersed with oil droplets, I+ orange-red, K/I+ blue (mainly the ascus walls); paraphyses simple, (1.5-)2 µm thick, the apical cells not widened; periphysoids simple or with short lateral branches, 20-40(-50) µm long. Asci > 100-spored, cylindrical, tapering towards the apex, the wall thin, I+ light blue, without a tholus. Ascospores (2-)3-septate, hyaline, ellipsoid-oblong with rounded ends, 7.5-13 x 3-5 µm, without a gelatinous sheath. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a western European, mild-temperate species growing on the trunks of ancient trees, especially Quercus ilex; easy to overlook, being almost always sterile, but certainly extremely rare, and confined to Tyrrhenian Italy. It is included in the Italian red list of epiphytic lichens as “Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: 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)

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: 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

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Crozon

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Crozon

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Le Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Le Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Le Drennec

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

CC BY NC - Source:http://fungi.myspecies.info/sites/fungi.myspecies.info/files/Opegrapha%20corticolaHtfld.jpg

Herbarium: Holotype

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Lesteven

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Plonevez Porzay

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Telgruc sur mer

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1341&lang=en

France, Roscanvel

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