Ricasolia virens (With.) H.H. Blom. & Tønsberg

in Tønsberg & al., Opuscula Philolich., 15: 15, 2016. Basionym: Lichen virens With. - Bot. Arrang. Veg. Gr. Brit.: 710, 1776.
Synonyms: Lobaria herbacea (Huds.) DC.; Lobaria laetevirens (Lightf.) Zahlbr.; Lobaria virens (With.) J.R. Laundon; Ricasolia herbacea (Huds.) De Not.; Sticta herbacea (Huds.) Ach.
Distribution: N - Ven, Lomb (S-L29262), Lig (Watson 2014). C - Tosc, Marc, Umb (Ravera & al. 2006), Laz, Abr, Sar (Ravera & al. 2021c, Di Nuzzo & al. 2022). S - Camp (Puntillo & al. 2000, Ricciardi & al. 2000, Nimis & Tretiach 2004, Puntillo & Puntillo 2011), Pugl (Nimis & Tretiach 1999), Bas, Cal (Tretiach 1993, Puntillo & Vezda 1994, Puntillo 1995, 1996, Schumm 2003, Giordani & al. 2009), Si (Tretiach 1993, Ottonello & Romano 1997, Ottonello & Puntillo 2009, Ottonello & al. 2011).
Description: Thallus foliose, heteromerous, dorsiventral, broad-lobed, more or less closely adpressed, forming rosettes to 10 cm in diam. Lobes becoming imbricate towards centre, otherwise contiguous, thin, smooth, 3-10 mm wide, with rounded apices and indented, sometimes lobulate margins. Upper surface dull grey-green to grey-brown when dry, bright green when wet, smooth and shiny, more rarely becoming wrinkled in central parts, very rarely (known only from Norway) with dendriscocauloid external cephalodia; lower surface almost white, with patches of a fine, brown tomentum. Upper and lower cortex paraplectenchymatous; medulla white, with globose internal cephalodia. Apothecia usually abundant, lecanorine, 1-4 mm across, with a pale pink-brown to orange-red disc and an inflexed, often warted thalline margin. Epithecium brownish; hymenium and hypothecium colourless; paraphyses mostly simple. Asci 8-spored, cylindrical, fissitunicate, the apex of the endoascus with a K/I+ blue ring-shaped structure, Peltigera-type. Ascospores 1(-3)-septate, at first hyaline then pale brown, fusiform, 25-45 x 8-11 μm. Pycnidia frequent, with a brown ostiole. Conidia widened at both ends, 4-5 x c. 1.5 μm. Photobiont chlorococcoid in thallus, cyanobacterial (Nostoc) in the cephalodia. Spot tests: upper cortex: K-, C-, KC-, P-; medulla K- or K+ pale yellow, C-, KC- or KC+ faintly pink, P-. Chemistry: without lichen substances, or medulla with weak amounts of scrobiculin.
Note: a mild-temperate to humid subtropical species found on old deciduous trees, more rarely on mossy rocks in old, natural, warm-humid forests; probably almost extinct in Northern Italy and along the eastern side of the Peninsula, except in the Gargano Peninsula, and very much declining, locally abundant only in few humid forests of Nouthern Italy. It is included in the Italian red list of epiphytic lichens as “Near-threatened” (Nascimbene & al. 2013c).
Growth form: Foliose, broad lobed
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Restricted to humid-warm, oceanic areas

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: extremely 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
Index Fungorum GBIF

Nere Sorrentino
Spain, Canary Islands, Tenerife



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20247)
2001/11/26



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20247)
2001/11/26


Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php



Felix Schumm - CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3



Felix Schumm - CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3



Felix Schumm - CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3


Nere Sorrentino
Spain, Canary Islands



Felix Schumm – CC BY-SA 4.0
Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Nere Sorrentino
Spain, Canary Islands, Tenerife, Anaga


Manuel Gil
Spain, Canary Islands, atenerife, amontes de las Mercedes


Nere Sorrentino
Spain, Canary Islands, Tenerife


Nere Sorrentino
Spain, Canary Islands, Tenerife


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ricasolia_laetevirens.htm
France, 24/03/2014 - Miluccia - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ricasolia_laetevirens.htm
France, 24/03/2014 - Miluccia - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ricasolia_laetevirens.htm
France, 24/03/2014 - Miluccia - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ricasolia_laetevirens.htm
France, 24/03/2014 - Miluccia - Corse


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_R/Textes_R/Ricasolia_laetevirens.htm
France, 24/03/2014 - Miluccia - Corse


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Joël Querellou - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Michel David - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


Jacques Haine - Source: http://www.lichensmaritimes.org/index.php?task=fiche&lichen=318&lang=en
France, Forêt du Cranou


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