Callome multipartita (Sm.) Otálora, P.M. Jørg. & Wedin

Fungal Divers. (online version), 64: 282, 2013. Basionym: Collema multipartitum Sm. in Smith & Sowerby - Engl. Bot.: 36, tab. 2582, 1814.
Synonyms: Collema multipartiens Nyl.; Lathagrium muelleri (Hepp) Arnold; Lathagrium multipartitum (Sm.) Kremp.; Lathagrium turgidum (Körb.) A. Massal.; Parmelia turgida (“Ach.”) Schaer. non Collema turgidum Ach.; Synechoblastus multipartitus (Sm.) Körb.
Distribution: N - VG, Frl (Tretiach & Molaro 2007), Ven, TAA (Nascimbene 2008b, Nascimbene & al. 2022), Lomb, Piem (Isocrono & al. 2004), Emil (Fariselli & al. 2020), Lig. C - Tosc, Laz, Abr, Mol (Nimis & Tretiach 1999, Caporale & al. 2008), Sar. S - Camp (Aprile & al. 2003b, Nimis & Tretiach 2004, Garofalo & al. 2010), Pugl, Cal (Puntillo 1996), Si (Nimis & al. 1996b).
Description: Thallus small-foliose, homoiomerous, gelatinous when wet, forming up to 5 cm wide rosettes. Lobes adpressed, linear to fan-shaped, usually convex, dull, dark olive-brown to black, often minutely striated, repeatedly dichotomously branched, radiating, 0.5-1.5 mm wide, much swelling when wet (up to 350 µm thick), not pubescent, without isidia. Lower surface usually paler, with tufts of white hapters. Upper and lower cortices absent. Apothecia frequent, lecanorine, sessile, 1-2 mm across, with a flat to slightly convex, brown-black disc, and a usually thin, persistent, smooth or crenulate-lobulate thalline margin. Thalline exciple ecorticate; proper exciple thick, 100-150 µm wide laterally, euparaplectenchymatous; epithecium brownish; hymenium colourless, 90-120 µm high, I+ blue; paraphyses simple or sparingly branched in upper part, 2-4.5 µm thick at mid-level, the apical cells slightly wider; hypothecium pale brown, I+ blue. Asci 8-spored, narrowly clavate, the apex thick, with a I+ blue apical dome and a I+ blue annulus projecting downwardly. Ascospores 3-4-septate, hyaline, linear-oblong, often curved at maturity, (20-)25-45(-60) x 4.5-6.5 µm. Pycnidia usually laminal, immersed, globose, pale with darker apex. Conidia bacilliform, straight, slightly swollen at both ends, 4.5-7 x 1-1.5 µm. Photobiont cyanobacterial (Nostoc, the cells in chains). Spot tests: all negative. Chemistry: without lichen substances.
Note: a mainly temperate to southern boreal-montane species found on calcareous rocks in rather sheltered situations; widespread, but never common.
Growth form: Foliose, narrow lobed
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: rare
Humid mediterranean belt: absent
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

Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5738)
2001/12/04
detail of pycnidia



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (5738)
2001/12/04



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
italy, Friuli Venezia Giulia, Trieste, Trieste Karst near Borgo Grotta Gigante
16/02/2017



Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017



Andrea Moro; Owner: Department of Life Sciences, University of Triedte
Italy, Friuli Venezia Giulia, Trieste, Trieste Karst, Rocca di Monrupino
20/02/2017



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern



Juri Nascimbene - CC BY-SA 4.0
Italy, Trentino-Alto Adige, Bolzano/Bozen, Sciliar/Schlern


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


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/


Degelius G. 1954. The lichen genus Collema in Europe: Morphology, Taxonomy, Ecology. Symbolae Bot. Upsal. 13, 2: 1-499.


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Callome_multipartita.htm
France, session AFL 2015 dans le Lot


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Callome_multipartita.htm
France, session AFL 2015 dans le Lot


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Callome_multipartita.htm
France, session AFL 2015 dans le Lot


Courtesy: Olivier et Danièle Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_C/Textes_C4/Callome_multipartita.htm
France, session AFL 2015 dans le Lot