Collemopsidium halodytes (Nyl.) Grube & B.D. Ryan

in Nimis, The Lichens of Italy. A second annotated catalogue: 19, 2016. Basionym: Verrucaria halodytes Nyl. - Mém. Soc. Imp. Sc. Nat. Cherbourg, 5: 142, 1858 (“1857”).
Synonyms: Arthopyrenia halodytes (Nyl.) Arnold; Arthopyrenia kelpii Körb.; Arthopyrenia orustensis Erichsen; Leiophloea halodytes (Nyl.) Trevis.; Paraphysothele halodytes (Nyl.) Keissl.; Pyrenocollema halodytes (Nyl.) R.C. Harris; Pyrenocollema orustense (Erichsen) A. Fletcher; Thelidium halodytes (Nyl.) Erichsen
Distribution: C - Tosc, Sar (Neuwirth 2018). S - Cal (Puntillo 1996), Si (Nimis & al. 1994).
Description: Thallus crustose, thinly episubstratic, continuous or in the form of scattered flecks, yellow-brown to dull brown, subgelatinous when wet, without dark ridges. Perithecia scattered, black, 0.1-0.3(-0.4) mm in diam., clearly projecting, often slightly flattened at the top. Involucrellum well-evident, distinctly spreading laterally; exciple dark in upper part, pale in lower half, more or less cellular; hamathecium of branched and anastomosing pseudoparaphyses, the hymenial gel I-. Asci 8-spored, ovoid to subcylindrical, usually stalked, with two functional wall layers, K/I-, the wall thickened above, with an ocular chamber, fissitunicate, with a distinct extruded rostrum at dehiscence. Ascospores 1-septate, hyaline, oblong, one cell usually longer than the other, 13-22 x 5-9 µm. Pycnidia common, black, distinctly flattened, the conidiogenous cells cylindrical, phialidic. Conidia bacilliform to ellipsoid, 2.5-3.5 x 0.5-1 µm. Photobiont cyanobacterial, (Hyella), the cells usually abundant, orange, up to 12 µm wide. Spot tests: all negative. Chemistry: without lichen substances.
Note: a subcosmopolitan maritime lichen, common, but often overlooked along the Italian coasts, most often found on barnacles (Balanus), Patella, Littorina etc, but also on calcareous rocks; the species however may have been confused with C. foveolatum or C. sublittorale: at least the record from the Tremiti Islands by Nimis & Tretiach (1999), and all records from the Trieste coast refer to former species. Italian material needs revision.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
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:

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(info)

Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF


D. Puntillo CC BY-SA 4.0



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (35809)
2003/03/12


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.


Source: Keissler K. von 1938. Pyrenulaceae, Mycoporaceae, Coniocarpineae. In: Rabenhorst G L: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. 2nd, IX, Die Flechten, Abt. 1, 2. Gebr. Borntraeger, Leipzig, pp. 1-846.



Domenico Puntillo; Owner: Domenico Puntillo
Italy


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Toulinguet, Pen Hat
cf.


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Toulinguet, Pen Hat
cf.


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Toulinguet
cf.


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Toulinguet
cf.


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Toulinguet
cf.


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, avec Wahlenbergiella striatula Camaret
cf.


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=72&lang=en
France, Roscanvel