Thelidium decipiens (Nyl.) Kremp.
Denkschr. kgl. bayer. bot. Ges., 4, 2: 246, 1861. Basionym: Verrucaria pyrenophora var. decipiens Hepp ex Nyl. - Mém. Soc. Imp. Sc. Nat. Cherbourg, 5: 137, 1858.
Synonyms: Amphoridium crassum (A. Massal.) Servít; Amphoridium uberinum A. Massal.; Thelidium amylaceum auct. non A. Massal.; Thelidium cinerascens (Anzi) Servít; Thelidium coerulescens Jatta; Thelidium crassum A. Massal.; Thelidium decipiens f. cinerascens (Anzi) Arnold; Thelidium hymenelioides Körb.; Thelidium immersum (Leight.) Mudd; Thelidium leightonii M. Choisy; Thelidium pachysporum Zschacke; Thelidium thuringiacum Zschacke; Thelidium umbrosum Arnold non (A. Massal.) A. Massal.; Verrucaria scrobicularis Garov.
Distribution: N - Frl (Cucchi & al. 2009), Ven (Nimis 1994, Lazzarin 2000), TAA (Nascimbene 2008b, Nascimbene & al. 2022), Lomb (Gheza & al. 2023), Piem (TSB 34785), VA (Piervittori & Isocrono 1999), Lig (Brunialti & al. 1999). C - Marc (Nimis & Tretiach 1999), Umb (Genovesi & Ravera 2001, Ravera & al. 2006), Abr (Gheza & al. 2021), Mol (Nimis & Tretiach 2004, Caporale & al. 2008). S - Camp (Aprile & al. 2003b), Pugl, Cal (Puntillo 1996), Si (Grillo 1998, Grillo & Caniglia 2004).
Description: Thallus crustose, endosubstratic or hemiendosubstratic, white, grey or cream-coloured, rarely pale brown, sometimes delimited by a dark prothalline line. Perithecia black, 0.3-0.4(-0.5) mm across, immersed in well-defined pits in the rock, rarely projecting with the apex when old, usually separated from the rock by a thin crack. Involucrellum absent; exciple dark brown throughout (blackish in thick section, translucent brown in squash preparations), sometimes paler brown in lower part, K- to K+ slightly darker brown or greenish-brown; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, narrowly ellipsoid to clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of a delicate rostrum. Ascospores 1-septate, hyaline, ellipsoid, (15-)20-36(-42) x (7-)10-15(-19) μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.Note: a cool-temperate to arctic-alpine, circumpolar species of calcareous rocks, including large pebbles, in rather sheltered situations, mostly in upland areas, with optimum above treeline. See also note on T. absconditum.
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: common
Subalpine belt: rather common
Oromediterranean belt: rare
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
Herbarium samples
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (19686)
2001/12/12
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15238)
2001/12/12
Source: 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
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15238)
2001/12/12
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thelidium_decipiens.htm
France, session AFL 2015 dans le Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thelidium_decipiens.htm
France, session AFL 2015 dans le Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thelidium_decipiens.htm
France, session AFL 2015 dans le Lot
Growth form: Crustose endolithic
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: common
Subalpine belt: rather common
Oromediterranean belt: rare
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (19686)
2001/12/12
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15238)
2001/12/12
Source: 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
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (15238)
2001/12/12
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thelidium_decipiens.htm
France, session AFL 2015 dans le Lot
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thelidium_decipiens.htm
France, session AFL 2015 dans le Lot
