Scytinium parvum (Degel.) Otálora, P.M. Jørg. & Wedin
Fungal Divers., 64, 1: 291, 2013. Basionym: Collema parvum Degel. - Symb. Bot. Upsal., 13, 2: 273, 1954.
Synonyms: Collema leptogioides auct. p.p. non Anzi
Description: Thallus small-foliose to subcrustose-placodioid, gelatinous when wet, forming up to 1.5 cm wide, orbicular rosettes which often tend to die centrally leaving a ring of lobes. Lobes dull black to rarely brown-black, neatly radiating, convex to flattened, strongly adpressed, (0.1-)0.2-0.3(-0.4) mm wide, 130-215 µm thick when wet; central parts of young thalli with scattered to dense, globose to oblong, 0.05-0.1(-0.15) mm thick isidia. Pseudocortex only partially developed, sometimes present only on the lower surface, consisting of 1-2 layers of isodiametrical cells, the layer inbetween not paraplectenchymatous, of intertwined hyphae and loosely arranged chains of Nostoc. Apothecia and pycnidia unknown. Photobiont cyanobacterial (Nostoc, the cells in short chains, the individual cells globose to oblong, 4-7 µm in diam., the surrounding jelly I+ deep wine-red). Spot tests: all negative. Chemistry: without lichen substances.
Growth form: Crustose
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: extremely rare
Montane belt: very rare
Dry submediterranean belt: extremely rare
Humid submediterranean belt: extremely rare
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map
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 (5736)
2001/12/04
Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/
Pier Luigi Nimis
Italy
TSB 37234
Growth form: Crustose
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: extremely rare
Montane belt: very rare
Dry submediterranean belt: extremely rare
Humid submediterranean belt: extremely rare
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map
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 (5736)
2001/12/04
Leif Stridvall
Courtesy: Anita Stridvall -Source: http://www.stridvall.se/lichens/gallery/
