Lecanora cadubriae (A. Massal.) Hedl.

Bih. K. Svenska Vetensk.-Akad. Handl., 18: 48, 1892. Basionym: Biatora cadubriae A. Massal. - Sched. Crit.: 176, 1856.
Synonyms: Biatora admixta Th. Fr.; Biatora aitema sensu A. Massal.; Lecanora nitida auct.?; Lecidea cadubriae (A. Massal.) Th. Fr.; Lecidea magnussoniana Hertel; Lecidea nitida Sommerf.; Lecidea subinsequens Nyl.
Distribution: N - Frl, Ven (Lazzarin 2000b, Nascimbene & Caniglia 2003c, Nascimbene & al. 2006e, Nascimbene 2008c, Watson 2014), TAA (Nascimbene & al. 2006, 2006e, 2007b, 2009, 2010, 2014, Thor & Nascimbene 2007, Nascimbene 2008b, 2013, 2014, Nascimbene & Marini 2015, Nimis & al. 2015, Trindade & al. 2021), Lomb (Nascimbene & al. 2006e), Piem (Isocrono & al. 2004), VA (Loppi 2014). C - Tosc (Benesperi & al. 2007).
Description: Thallus crustose, episubstratic, granular to verrucose-areolate, rarely reduced to sparse granules surrounding the apothecia, yellowish white to yellowish grey, rarely delimited by a thin, whitish grey prothallus. Areoles thin, ecorticate, smooth. Apothecia clearly (pseudo-)lecanorine only when young, sessile, 0.2-0.8 mm across, with a reddish brown to blackish brown, flat to convex, often grey-pruinose disc, and a paler, thin but prominent, entire, epruinose, finally excluded thalline margin. Thalline exciple with very few algal cells, mostly located near the base; proper exciple colourless, lacking crystals; epithecium brown to olive-green, with pigment and coarse crystals dissolving in K; hymenium colourless, not inspersed with oil droplets; paraphyses rather coherent, capitate, the apical cells up to 4 µm thick; hypothecium colourless, not inspersed. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, narrowly ellipsoid, 7-13 x 3-5 μm, the wall <1 µm thick. Pycnidia usually abundant, immersed, black. Conidia bacilliform, 3-6 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow turning orange-red (red crystals), C-, KC-, P+ orange. Chemistry: norstictic acid (major), connorstictic acid (minor), and salazinic acid (major or absent); the chemotype with virensic acid was never found in Italy.
Note: a circumboreal-montane species found on the bark of conifers, especially near the base of the trunks, more rarely on lignum of decorticated trunks, with optimum in the upper montane and subalpine belts.
Growth form: Crustose
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: rather rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0
TSB 41820

Domenico Puntillo; Owner: Domenico Puntillo

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (10513)

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (8206)
closely related to Lecanora cadubriae

P.L. Nimis CC BY-SA 4.0
TSB 34397

P.L. Nimis CC BY-SA 04
TSB 41820