Hydropunctaria amphibia (Ach.) Cl. Roux

Hydropunctaria amphibia (Ach.) Cl. Roux

in Roux & al., Bull. Soc. linn. Provence, num. spéc. 14: 108, 2011. Basionym: Verrucaria amphibia Clemente ex Ach. - Syn. Meth. Lich.: 94, 1814.

Synonyms:

Distribution: N - Ven, Lig. C - Tosc, Sar. S - Camp, Cal (Puntillo 1996), Si (Nimis & al. 1994, Ottonello & Salone 1994, Ottonello & al. 1994, Grillo 1998, Grillo & Caniglia 2004).

Description: Thallus crustose, episubstratic, rather thick, smooth, glossy, brownish black, dark green when moist, with black dots best visible in the moist state, subgelatinous when wet, uneven, slightly to abundantly cracked, the marginal parts with small, sinuous, radially oriented black wrinkles, the central parts with shorter wrinkles or crests oriented in all directions, with no evident prothallus. Cortex poorly defined, with a brown pigment in upper part; photobiont cells arranged in vertical rows; medulla with distinctly elongated, 40-400 x 40-60 μm, carbonaceous columns, some of which always reach the surface, at least near the thallus margin. Perithecia 0.3-0.6 mm across, conical-hemispherical, projecting, with a flattened and crenulate apex, the ostioles visible as minute pits, the flanks uneven or crenulate. Involucrellum black, well-developed; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I + blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, narrowly ellipsoid, 13-18 x 5-7 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on maritime rocks. The whole complex of the Mediterranean-Atlantic brown maritime Hydropunctaria-species badly needs revision in Italy. According to Roux & Coll. (2014, 2020) this species is restricted to the Atlantic coasts, while in the Mediterranean basin it is substituted by H. symbalana. All records from Italy are therefore dubious, and could refer to H. symbalana.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Periodically submerged (e.g. in creeks)

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: rare

Dry mediterranean belt: 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

Herbarium samples

Source: http://fungi.myspecies.info/all-fungi/hydropunctaria-amphibia - CC BY-NC

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Vancouver Island, Albert Head Date: 2013-10-03 Saxicolous, aerohaline rocks

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Kerloc'h

Michel David - Source:https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Kerloc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Lostmarc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Lostmarc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Kerloc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Lostmarc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Lostmarc'h

Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=19&lang=en

France, Lostmarc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Lostmarc'h

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Pointe de Kerdra

Michel David - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Pointe de Kerdra

Michel David - Source:https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Pointe de Kerdra

Michel David - Source:https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Pointe de Kerdra

Bernard Bouffinier - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, La Palud

Bernard Bouffinier - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, La Palud

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

Jacques Haine - Source: https://italic.units.it/flora/?procedure=img_ins2&species_id=1666

France, Crozon

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