Enchylium conglomeratum (Hoffm.) Otálora, P.M. Jørg. & Wedin

Fungal Divers. (online version), 64: 286, 2013. Basionym: Collema conglomeratum Hoffm. - Deutschl. Fl.: 102, 1796.
Synonyms: Collema fasciculare var. conglomeratum (Hoffm.) Ach.; Synechoblastus conglomeratus (Hoffm.) Körb.
Distribution: N - VG, Frl (Molaro 2005, Tretiach & Molaro 2007), Ven, TAA (Nascimbene & al. 2007b), Lomb, Piem (Isocrono & al. 2004, Matteucci & al. 2013), Emil (Fariselli & al. 2020), Lig (Giordani & Incerti 2008). C - Tosc (Loppi & Frati 2006), Marc (Nimis & Tretiach 1999, Frati & Brunialti 2006), Umb (Genovesi & al. 2002, Ravera & al. 2006), Laz (Massari & Ravera 2002, Ravera & Genovesi 2008), Abr, Sar (Rizzi & al. 2011). S - Camp (Garofalo & al. 2010), Pugl, Bas (Potenza & al. 2014), Cal (Puntillo 1996), Si (Merlo 2004).
Description: Description: Thallus small-foliose to subsquamulose, homoiomerous, gelatinous when wet, 2-10 mm wide, forming rounded cushions often attached by a central point, which sometimes coalesce, covering surfaces to 5 cm across. Lobes few, 0.5-.1.5 mm wide, flattened, adpressed to erect, usually branched, distinctly swollen, with entire, crenate or lobulate margins. Upper surface dark olive-green to brown or black, dull, epruinose, smooth to (rarely) verrucose, without isidia; lower surface usually paler. Upper and lower cortices absent. Apothecia crowded, often hiding the lobes, sessile, with constricted base on lobe margins or terminal 0.5-1.5(-2) mm across; disc plane to convex, dark reddish brown; thalline margin rather thick, eventually disappearing, entire, smooth. Proper exciple to 20 µm thick, euthyplectenchymatous; hymenium colourless, 60-80 µm tall. Asci 8-spored, clavate, the apex thick, with a I+ blue apical dome and a I+ blue annulus projecting downwardly. Ascospores 1(-3) septate, hyaline, fusiform with acute ends, (10-)15-24(-26) x 3-4.5(-5.5) µm. Pycnidia common, immersed, globose. Conidia bacilliform, slightly swollen at the ends, 3-4 x 1 µm. Photobiont cyanobacterial (Nostoc), in long chains. Spot tests: all negative. Chemistry: without lichen substances.
Note: a mainly temperate species with a fragmented holarctic range, found on nutrient-rich bark, especially of Juglans; formerly more widespread, presently restricted to the vicinity of small settlements in mountain valleys, where it is locally abundant.
Growth form: Foliose, narrow lobed
Substrata: bark
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


pH of the substrata:

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5

Solar irradiation:

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5

Aridity:

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Eutrophication:

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Poleotolerance:

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0

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Altitudinal distribution:

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P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (24147)
2008.03.06



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13672)
2001/12/04



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13672)
2001/12/04



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



Andrea Moro; Owner: Department of Life Sciences, University of Trieste
Slovenia, Lipica/Lipizza; altitude: 2
2008.02.21



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15327)
2008.03.06



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15327)
2008.03.06



P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (24147)
2008.03.06


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