Varicellaria velata (Turner) I. Schmitt & Lumbsch

in Schmitt & al., MycoKeys, 4: 31, 2012. Basionym: Parmelia velata Turner - Trans. Linn. Soc. London, 9: 143, 1808.
Synonyms: Pertusaria conglobata (Ach.) Th. Fr.; Pertusaria obvelata Nyl.; Pertusaria velata (Turner) Nyl.; Variolaria conglobata Ach.
Distribution: C - Sar (Loi & al. 2000, Zedda 2002). S - Camp (Ravera & al. 2021c), Pugl (Nimis & Tretiach 1999).
Description: Thallus crustose, episubstratic, continuous to rimose-areolate, smooth or rugose, whitish grey to yellowish grey, unzoned. Apothecia immersed into 0.5-1.2 mm wide fertile warts, 1(-3) per wart, with an expanded, 0.5-0.7 mm wide, sunken, pink but often heavily white-pruinose disc, and a prominent, persistent smooth or crenulate thalline margin. Epithecium dark brown to black, K-, with numerous crystals reacting C+ red; hymenium colourless, not amyloid; paraphyses slender, lax, branched and richly anastomosing; hypothecium colourless to yellowish. Asci 1(-2)-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, Pertusaria-type. Ascospores 1-celled, hyaline, fusiform to cylindrical, 130-210(-310) x (28-)40-80(-90) µm, the wall 1-layered, smooth, 8-15 µm thick. Photobiont chlorococcoid. Spot tests: thallus K-, C+ carmine red, KC+ red, P-, UV- or UV+ orange; pruina on the apothecial discs C+ carmine red. Chemistry: lecanoric acid, sometimes lichexanthone.
Note: a chemically variable, mild-temperate to humid subtropical lichen found on bark in humid-sheltered situations; certainly rare, and mostly coastal in Italy, where it is known from Sardinia and the Gargano Peninsula, but to be looked for in other parts of the Tyrrhenian ecoregion. It 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: absent
Padanian area: absent
Humid submediterranean belt: extremely rare
Humid mediterranean belt: very rare
Dry mediterranean belt: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples


P.L. Nimis CC BY-SA 04
TSB 20227



Curtis Randall Björk – CC BY-SA 4.0
Quebec, Gatineau Hills near Aylmer Date: 1998-05-00 Photographed from specimen (Goward 98-17, UBC), on trunk of Quercus



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20227)
2001/11/28


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Pertusaria_conglobata.htm
France, 16/10/2017 - punta di Barcaju, sentier littoral - Corse - (20) - sur rocher de granite, det. C. Roux
as Pertusaria conglobata