Coenogonium luteum (Dicks.) Kalb & Lücking

in Lücking & Kalb, Bot. Jahrb., 122: 32, 2000. Basionym: Lichen luteus Dicks. - Fasc. Pl. Cryptog. Brit., 1: 11, 1785.
Synonyms: Biatorina lutea (Dicks.) Körb.; Dimerella lutea (Dicks.) Trevis.; Gyalecta lutea (Dicks.) Hornem.; Microphiale lutea (Dicks.) Zahlbr.
Distribution: N - VG, Ven (Nascimbene 2004, Nascimbene & al. 2005b, 2006c), Lomb (Jatta 1909-1911), Piem (Isocrono & al. 2004). C - Tosc, Laz (Munzi & al. 2013), Sar (Zedda 2002, 2002b). S - Camp (Aprile & al. 2003b), Pugl, Cal (Puntillo 1996, Potenza & al. 2023), Si (Nimis & al. 1994, Ottonello & Puntillo 2009, Ottonello & al. 2011).
Description: Thallus crustose, thinly episubstratic, spreading, continuous to cracked-areolate, pale yellowish green to dark olive-green, sometimes evanescent. Apothecia biatorine, sessile, round, (0.4-)0.6-1.5(-2) mm across, usually scattered, clearly constricted at base, with an orange-yellow to yellow-red, shallowly concave then convex, epruinose disc and a paler, flesh-coloured, prominent, entire or flexuose, persistent proper margin. Proper exciple colourless, 40-60 µm thick, paraplectenchymatous, composed of globose to angular cells with an outer layer of weakly vertically oriented hyphae; hymenium colourless, I+ blue, then rapidly dirty green and finally red-brown; paraphyses sparingly branched in upper part, 1.5-2.7 µm thick at mid-level, the apical cells c. 4.5 µm wide; hypothecium colourless. Asci 8-spored, subcylindrical-clavate, with a blue outer coat and uniformly K/I+ blue apical dome, Catillaria-type. Ascospores 1-septate, hyaline, fusiform to fusiform-ellipsoid, (6-)9-11(-14) x 2-3.5(-4.5) µm. Pycnidia more or less immersed, yellowish brown, the wall colourless. Conidia ellipsoid, 3-4(-5) x 1.3-2(-2.5) µm, not constricted in the middle. Photobiont trentepohlioid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mild-temperate to humid subtropical lichen found on bark and epiphytic liverworts in semi-natural, old, humid forests at low elevations; mostly Tyrrhenian in Italy. It is included in the Italian red list of epiphytic lichens under the “Least Concern” category (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: very rare
Humid mediterranean belt: extremely rare
Dry mediterranean belt: absent

pH of the substrata:

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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


Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010


Andres Saag; Owner: University of Tartu



Domenico Puntillo; Owner: Domenico Puntillo
Italy


Gothamie Weerakoon; Owner: Gothamie Weerakoon


Gothamie Weerakoon; Owner: Gothamie Weerakoon


Gothamie Weerakoon; Owner: Gothamie Weerakoon



Curtis Randall Björk, - CC BY-SA 4.0
Vancouver Island, British Columbia, Canada
2017



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9421)
2001/11/23



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010



Felix Schumm – CC BY-SA 4.0
[8577], Portugal, Madeira, Ribeiro Frio, unmittelbar an der Straße oberhalb des Rastplatzes, Nordhang mit Lorbeerwald, 32°44.072’ N, 16°53.230’ W, 903 m. Leg. Schumm 14.04.2001, det. Aptroot 2010


Helena Rodriguez
Spain, Rio Rato, Lugo


Helena Rodriguez
Spain, Rio Rato, Lugo


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Coenogonium_luteum.htm
France, Paragan-Fenu - Corse
16/10/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Coenogonium_luteum.htm
France, Paragan-Fenu - Corse
16/10/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Coenogonium_luteum.htm
France, Paragan-Fenu - Corse
16/10/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Coenogonium_luteum.htm
France, Paragan-Fenu - Corse
16/10/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Coenogonium_luteum.htm
France, Paragan-Fenu - Corse
16/10/2015


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Mougau


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Mougau


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Cranou


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Menez, Hom


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Menez, Hom


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Plogonnec


Bernard Bouffinier - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Plogonnec


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Cranou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Plogonnec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Plogonnec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=365&lang=en
France, Le Drennec


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=1126&lang=en
France, forme sur roche, Folgoet


Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder
Portugal: Madeira. 1000 m in Laurisilva