Opegrapha parasitica (A. Massal.) H. Olivier
Bull. Acad. Intern. Géogr. Bot., 16: 190, 1906. Basionym: Leciographa parasitica A. Massal. - Geneac. Lich. (Verona): 14, 1854.
Synonyms: Leciographa centrifuga (A. Massal.) Rehm; Opegrapha centrifuga A. Massal.
Distribution: N - VG (Hafellner 2009, Brackel 2016), Ven (Lazzarin 2000b, Brackel 2016), TAA (Brackel 2016), Piem (Brackel 2016), Emil (Fariselli & al. 2020), Lig (GDOR 372). C - Tosc (Hafellner 2009, Brackel 2016), Sar (Hafellner 2009, Brackel 2016). S - Cal (Hafellner 2009, Brackel 2016), Si (Nimis & al. 1994, Brackel 2016).
Description: Thallus inapparent, not lichenized, developing on the thalli of Circinaria-species. Apothecia at first isodiametric and resembling perithecia, then more or less elongate and lirelliform, black, epruinose, 0.2-0.4 x 0.1-0.2 mm, initially slightly immersed, later often sessile, with a slit-like disc becoming exposed in old apothecia, and a black, carbonaceous exciple which is open below the hymenium. Epithecium brownish; hymenium colourless, K/I+ blue, the upper part brownish and K/I-. Asci 8-spored, subglobose to clavate, Opegrapha-type. Ascospores 3-septate, hyaline (finally often brownish and with a verruculose surface),16-22 x 6-8 μm, with a thin perispore. Photobiont: absent. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances. Note: a lichenicolous fungus growing on the thalli of Circinaria calcarea and related species, certainly much more widespread in Italy; in the past it was often confused with O. rupestris.
Growth form: Lichenicolous fungus
Substrata: rocks
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: extremely rare
Subalpine belt: very rare
Oromediterranean belt: very rare
Montane belt: common
Submediterranean belt: rather common
Padanian area: extremely rare
Humid submediterranean belt: common
Humid mediterranean belt: rather common
Dry mediterranean belt: very rare
Predictive model
Herbarium samples
Harrie Sipman
Thasos (Sipman & Raus 58905);
Identification provisional
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_O/Texte_O/Opegrapha_parasitica.htm
France, 23/5/2017 - Lioux - Vaucluse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_O/Texte_O/Opegrapha_parasitica.htm
France, 23/5/2017 - Lioux - Vaucluse
Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain
Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain
Growth form: Lichenicolous fungus
Substrata: rocks
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: extremely rare
Subalpine belt: very rare
Oromediterranean belt: very rare
Montane belt: common
Submediterranean belt: rather common
Padanian area: extremely rare
Humid submediterranean belt: common
Humid mediterranean belt: rather common
Dry mediterranean belt: very rare
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
Harrie Sipman
Thasos (Sipman & Raus 58905);
Identification provisional
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_O/Texte_O/Opegrapha_parasitica.htm
France, 23/5/2017 - Lioux - Vaucluse
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_O/Texte_O/Opegrapha_parasitica.htm
France, 23/5/2017 - Lioux - Vaucluse
Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain
