Scytinium massiliense (Nyl.) Otálora, P.M. Jørg. & Wedin

Fungal Divers., 64, 1: 291, 2013. Basionym: Leptogium massiliense Nyl. - Flora, 62: 354, 1879.
Synonyms:
Description: Thallus subfruticose, subgelatinous when wet, forming up to 1(-2) cm wide, 1-4 mm thick, rather loosely attached cushions, the lobes at first flattened, prostrate and irregularly spreading, up to 0.3 mm wide, then ascending and terete-filamentous, c. 3(-4) x 0.1-0.2 mm, dichotomously branched, brown to brown-black, somehow glossy, smooth or rarely longitudinally wrinkled, sometimes with isidia-like outgrowths. Upper and lower pseudocortex formed by regular layers of angular cells, the layer inbetween not paraplectenchymatous. Apothecia very rare, lecanorine, 0.3-0.4(-0.6) mm across, with a concave to flat, brown disc and a distinct thalline margin. Thalline exciple pseudocorticate; proper exciple pseudoparenchymatous; epithecium brownish; hymenium and hypothecium colourless; paraphyses coherent, mostly simple, the apical cells slightly swollen. Asci 8-spored, narrowly clavate, the apex strongly thickened, the apical dome K/I+ pale blue, with a downwardly projecting K/I+ deep blue tubular structure. Ascospores submuriform, with 3-5 transverse septa and 1-2 longitudinal septa, hyaline, ellipsoid, 15-27 x 7-11 μm, thin-walled. Pycnidia immersed. Conidia bacilliform. Photobiont cyanobacterial (Nostoc, the cells in short chains). Spot test: all negative. Chemistry: without lichen substances.
Growth form: Fruticose filamentous
Substrata: rocks
Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: rather rare
Dry submediterranean belt: rather common
Humid submediterranean belt: rather common
Padanian area: 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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Rarity

absent
extremely rare
very rare
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common
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extremely common
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Occurrence data
Predictive map

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (17033)
2001/11/26


Domenico Puntillo; Owner: Department of Life Sciences, University of Trieste
Italy, Campania, Salerno, Valle Fiume Bussento (Salerno) .
Herbarium: CLU (17786)
06.04.2013


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (17033)
2001/11/26