Agonimia allobata (Stizenb.) P. James

in Coppins & al., Lichenologist, 24: 366, 1992. Basionym: Verrucaria allobata Stizenb. - Ber. naturw. Ges. St. Gallen: 501, 1882 (1880-1881).
Synonyms: Amphoroblastia allobata (Stizenb.) Servít; Polyblastia allobata (Stizenb.) Zschacke
Distribution: N - VG (Tretiach & Carvalho 1993, Carvalho 1997), Ven (Nascimbene 2008, Nascimbene & al. 2008e, 2012, 2015, Muggia & al. 2009, 2010, Nascimbene & Marini 2010), Emil (Nimis & al. 1996, Fariselli & al. 2020). S - Camp (Ravera & Brunialti 2013).
Description: Thallus crustose, episubstratic, grey-green to brown, continuous to granular-coralloid (goniocysts). Cells of the upper cortex with papillae. Perithecia 0.1-0.25 mm across (in section), more or less globose, sometimes slightly barrel-shaped, 2/3 immersed to almost entirely superficial, grey-brown when young, later usually black, but paler around the ostiole, the surface smooth, not glossy. Exciple 2-layered, pigmented in outer part, colourless and of compressed cells within; involucrellum absent; hamathecium of periphysoids which soon dissolve into a poorly differentiated hymenial gel (interascal filaments in mature ascomata lacking). Asci 8-spored, clavate, thin-walled, fissitunicate, not or very weakly thickened above, I-, K/I-. Ascospores muriform, hyaline, ellipsoid, (25-)29-35(-45) x 10-16 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mild-temperate species with subtropical affinities found on ancient deciduous trees, in crevices or amongst mosses, often at the base of trunks, in undisturbed forests or in deep gorges of the submediterranean belt; to be looked for further in Tyrrhenian Italy. The species is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

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: very rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent


pH of the substrata:

(info)

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5

Solar irradiation:

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Aridity:

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Eutrophication:

(info)

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Poleotolerance:

(info)

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Altitudinal distribution:

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Juri Nascimbene - CC BY-SA 4.0
Italia, Veneto, Veneto, Belluno, Vincheto di Celarda, Feltre



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (17804)
2001/11/28



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



Juri Nascimbene - CC BY-SA 4.0
Italy, Veneto, Belluno, Vincheto di Celarda, Feltre
2007



P.L. Nimis CC BY-SA 04
TSB 17804