Thyrea confusa Henssen
in Henssen & Jørgensen, Lichenologist, 22: 146, 1990.
Synonyms: Omphalaria pulvinata auct. non (Schaer.) Nyl.; Thyrea pulvinata auct. non (Schaer.) A. Massal.
Distribution: N - VG, Frl, Ven, TAA, Lomb, Piem (Isocrono & al. 2004), Emil (Fariselli & al. 2020), Lig. C - Tosc, Marc (Nimis & Tretiach 1999), Laz, Abr (Nimis & Tretiach 1999, Caporale & al. 2016), Sar. S - Cal (Puntillo 1996), Si (Nimis & al. 1996b, Ottonello & al. 2011).
Description: Thallus foliose to squamulose-umbilicate, polyphyllous, gelatinous when wet, forming small cushions or up to 2 cm wide rosettes. Squamules 2-5 mm wide, to 1 cm long, erect or ascending, flat or weakly channelled on lower surface, irregularly branched, broadly rounded at apex, black but most often bluish-grey pruinose, often with small, globose, granular isidia, otherwise smooth; lower surface plicate, often paler than upper surface. Thallus ecorticate, 250-500 µm thick; medulla 200-300 µm thick, of irregularly arranged, lax hyphae, in the upper and lower parts consisting of mainly anticlinally oriented hyphae enclosing the photobiont cells. Apothecia immersed or semi-immersed, hemiangiocarpic, forming pycnoascocarps from ascogonia beneath pycnidia, rare, small, the disc punctiform, slightly depressed, brownish, with a persisting thalline margin. Proper exciple colourless, up to 10 µm wide; hymenium colourless, up to 150 µm high, K/I+ blue; paraphyses distinctly septate, sparingly branched and anastomosing, the apical cells slightly thickened, up to 3 µm wide; hypothecium colourless. Asci 8-spored, cylindrical, thin-walled, with an external I+ blue cap. Ascospores 1-celled, hyaline, globose to broadly ellipsoid, thin-walled, (7.5-)8-12(-15) x 5-7.5(-10) µm. Pycnidia immersed, globose, unilocular, 90-120 µm across. Conidia cylindrical, 2-3 x 1-1.5 µm. Photobiont cyanobacterial, chroococcoid, with a few cells measuring (4-)6-8(-10) µm, surrounded by a brownish gelatinous sheath. Spot test: all negative. Chemistry: without lichen substances.
Note: on steeply inclined, sunny faces of calcareous rocks with short periods of water seepage after rain; certainly more widespread.
Growth form: Fruticose
Substrata: rocks
Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: rather rare
Padanian area: absent
Humid submediterranean belt: rare
Humid mediterranean belt: very rare
Dry mediterranean belt: extremely rare
Predictive model
Herbarium samples
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (2294)
2001/12/11
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Growth form: Fruticose
Substrata: rocks
Photobiont: cyanobacteria, coccaceous (e.g. Gloeocapsa)
Reproductive strategy: mainly sexual
On otherwise dry surfaces with short periods of water seepage after rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: rather rare
Padanian area: absent
Humid submediterranean belt: rare
Humid mediterranean belt: very rare
Dry mediterranean belt: extremely rare
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (2294)
2001/12/11
Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_T/Textes_T2/Thyrea_confusa.htm
France, 18/5/2015 - Session AFL en Dordogne - Bourzolles
