Peltula obscurans (Nyl.) Gyeln.
Repert. Spec. Nov. Regni Veg., 38: 308, 1935. Basionym: Endocarpiscum obscurans Nyl. - Bull. Soc. Linn. Normandie, 2, 6: 309, 1872.
Synonyms: Acarospora collemacea Wedd.; Acarospora subglebosa (Müll. Arg.) Hue; Heppia acarosporoides Müll. Arg.; Heppia collemacea (Wedd.) Boistel; Heppia deserticola Zahlbr.; Peltula subglebosa (Müll. Arg.) Filson; Solorinaria collemacea (Wedd.) Gyeln.
Description: Thallus squamulose-umbilicate, heteromerous, the squamules entire to dissected, flat to convex, up to 2 mm wide, olive-brown to dark brown when dry, almost black when wet, dispersed or contiguous, sometimes overlapping; lower surface paler than the upper surface, attached by a more or less central, branched holdfast. Upper cortex not developed, but upper surface with a yellowish epinecral layer; medulla consisting of loosely interwoven hyphae and partly paraplectenchymatous; photobiont layer well-delimited, 90-180 µm thick; lower cortex hardly distinguishable from the medulla. Apothecia 1-2 per squamule, at fist immersed, then adnate, 0.3-1 mm across, with an initially punctiform, later slightly expanded, reddish brown to brown disc and a thin thalline margin. Proper exciple thin; epithecium yellowish brown, K+ red-violet or rarely K-; hymenium colourless, I+ wine-red, 70-150 µm high. Asci >100-spored, clavate to obclavate, rostrate, the wall I+ orange, K/I+ blue. Ascospores 1-celled, hyaline, ovoid to ellipsoid, 4.5-7(-9) x 2-4 µm. Pycnidia immersed, cerebriform. Conidia ovoid-fusiform, 3.1-3.7 x c. 1.2 µm. Photobiont cyanobacterial, chroococcoid, one-celled. Spot tests: thallus and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Foliose, umbilicate
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: absent
Dry submediterranean belt: extremely rare
Humid submediterranean belt: very 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
P.L. Nimis CC BY-SA 04
TSB 17546
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10057)
2001/11/28
Pier Luigi Nimis - CC BY-SA 4.0
TSB 17546
Pier Luigi Nimis - CC BY-SA 4.0
TSB 17546
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Felix Schumm - CC BY-SA 4.0
[ABL77819], Brazil, Mato Grosso do Sul, Bodoquena, Dente de Cão
summit,in Atlantic rain forest on exposed limestone. 20°47’´05'' S,
56°45’03'' W, 450 m. Leg. A. Aptroot (no 77819), 7.11.2018, det. A.
Aptroot, 2019.
Felix Schumm - CC BY-SA 4.0
[ABL77819], Brazil, Mato Grosso do Sul, Bodoquena, Dente de Cão
summit,in Atlantic rain forest on exposed limestone. 20°47’´05'' S,
56°45’03'' W, 450 m. Leg. A. Aptroot (no 77819), 7.11.2018, det. A.
Aptroot, 2019.
Growth form: Foliose, umbilicate
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: absent
Dry submediterranean belt: extremely rare
Humid submediterranean belt: very 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
P.L. Nimis CC BY-SA 04
TSB 17546
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10057)
2001/11/28
Pier Luigi Nimis - CC BY-SA 4.0
TSB 17546
Pier Luigi Nimis - CC BY-SA 4.0
TSB 17546
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Peltula_obscurans.htm
France, 19/10/2012 - col Santo Stefano, défilé de Lancone, alt. 333 m - sur roche - Corse
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Manuel Gil
Spain, Canary Islands, Tenerife
Felix Schumm - CC BY-SA 4.0
[ABL77819], Brazil, Mato Grosso do Sul, Bodoquena, Dente de Cão summit,in Atlantic rain forest on exposed limestone. 20°47’´05'' S, 56°45’03'' W, 450 m. Leg. A. Aptroot (no 77819), 7.11.2018, det. A. Aptroot, 2019.
