Glyphopeltis ligustica (B. de Lesd.) Timdal

Mycotaxon, 31: 102, 1988. Basionym: Psora ligustica B. de Lesd. - Bull. Soc. Bot. France, 28: 82, 1936.
Synonyms: Glyphopeltis eburina Brusse; Xanthopsorella llimonae Hertel, Egea & Poelt
Distribution: N - Lig. C - Sar.
Description: Thallus of peltate, orbicular to irregular, scattered to crowded, cream-coloured to olivaceous brown squamules, starting the life-cycle on the thalli of Peltula-species. Squamules up to 15 mm in diam. and up to 0.9 mm thick, smooth or often cracked, with an undulate margin. Lower surface reddish brown to brown-black, rugose, attached by a central holdfast or by centrally located, thick rhizohyphae. Upper cortex paraplectenchymatous, (45-)100-180 μm thick, often overlain by a thick epinecral layer; medulla white, prosoplectenchymatous, I-; lower cortex poorly developed, of periclinallly arranged, dark hyphae. Apothecia lecideine, black, epruinose, rounded or irregular in outline, up to 1.2(-1.8) mm across, marginal or laminal, sessile and slightly constricted at base, with a strongly convex disc and a thin, soon excluded proper margin. Proper exciple of radially arranged hyphae; epithecium blue-green to green-brown, without crystals, N+ purple; hymenium colourless, 40-65 μm high, I+ blue turning reddish; paraphyses simple or sparingly branched and anastomosing, 2-3.5 μm thick at base, the apical cells to 6 μm wide; hypotecium pale brown. Asci 8-spored, clavate, surrounded by a thin gelatinous sheath reacting I+ blue, with an amyloid tolus of finely superimposed layers and a darker tubular structure, approaching the Psora-type. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, (6-)8-12(-15) x (4-)5-7.5 μm. Pycnidia globose, hyaline, immersed in the squamules. Conidia straight, bacilliform, 5-8 x c. 1 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-. Chemistry: with low amounts of atranorin and a unidentified substance.
Note: on steeply inclined surfaces of siliceous rocks, growing on the thalli of Peltula-species in areas with frequent humid maritime winds; much less frequent than its hosts and mostly coastal in Italy.
Growth form: Squamulose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
paras Peltula euploca and P. placodizans

Commonnes-rarity: (info)

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


Felix Schumm; Owner: CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987



Felix Schumm; Owner: CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9610)
2001/12/03
with the host, Peltula euploca



Felix Schumm; Owner: CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987



Felix Schumm; Owner: CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.



Felix Schumm - CC BY-SA 4.0
[TSB_9610], Italy, Sardinia, Prov. Nuoro, Torre Argentina near Bosa, on tuff, parasitic on Peltula euploca, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.