Fuscidea stiriaca (A. Massal.) Hafellner

Fritschiana, 33: 42, 2002. Basionym: Biatora stiriaca A. Massal. - Ric. Auton. Lich. Crost., 125, 1852.
Synonyms: Biatorinella fagicola (Zschacke) Deschâtres & Werner; Fuscidea cyathoides var. corticola (Fr.) Kalb; Fuscidea fagicola (Zschacke) Hafellner & Türk; Lecidea cyathoides var. corticola (Fr.) H. Magn.; Lecidea fagicola Zschacke; Lecidea rivulosa var. corticola (Fr.) Jatta; Lecidea stiriaca (A. Massal.) Jatta
Distribution: N - VG, Frl (TSB 29420), Ven, TAA (Nascimbene & al. 2007b), Lomb (Chiappetta & al. 2005), Piem, Emil (Tretiach & al. 2008, Watson 2014, Brackel 2015, Fariselli & al. 2020), Lig (Giordani & Incerti 2008). C - Tosc (Tretiach & Nimis 1994, Loppi & al. 1999a, Benesperi & al. 2007, Brunialti & Frati 2010, Benesperi 2011, Brackel 2015), Umb (Ravera 1998, Ravera & al. 2006), Laz (Ravera 2001, 2002, Massari & Ravera 2002), Abr (Stofer 2006), Sar. S - Camp (Aprile & al. 2003b, Brunialti & al. 2010, 2013, Garofalo & al. 2010), Pugl (Nimis & Tretiach 1999), Bas (Brackel 2011), Cal (Puntillo 1996, Incerti & Nimis 2006, Stofer 2006), Si.
Description: Thallus crustose, continuous to rimose- cracked, grey, brownish green to olive-brown, often delimited by a dark brown to black prothallus and forming mosaics. Apothecia lecideine, constricted at base, round to irregular, to 1.8 mm across, with a brown to black, flat disc, and a prominent, smooth to strongly flexuose proper margin which is often slightly paler than disc. Epithecium brown; hymenium pale or faintly brownish; paraphyses 1.5-2 μm thick, simple or sparingly branched, weakly conglutinated in water, becoming free in K, the apical cells to 4-5 μm wide; hypothecium colourless. Asci 8-spored, clavate, with a thin external and internal K/I+ dark blue cap surrounded by a thick K/I+ pale blue apical cap, and with a K/I- apical tube in tholus, Fuscidea-type. Ascospores 1-celled, hyaline to finally pale brown, broadly ellipsoid when young, bean-shaped when mature, (7-)10-11(-14.5) x 4-6 μm. Pycnidia abundant, brown, immersed to emergent, with a thin thalline rim. Conidia bacilliform 3-4.5 x 1-2 μm. Photobiont chlorococcoid. Spot tests: thallus K+ brownish yellow, C-, KC-, P+ rust red, UV-. Chemistry: fumarprotocetraric acid (major), protocetraric acid (trace).
Note: a cool-temperate to southern boreal-montane lichen found on bark (mainly of Fagus); perhaps declining, especially in northern Italy. According to Roux & coll. (2014) it should be better treated as a variety of F. cyathoides; molecular data as well (Zahradnikova et al. 2017) do not justify a separation at species level from F. cyathoides.
Growth form: Crustose
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: rather rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: extremely rare
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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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 4.0
TSB 36778



P.L. Nimis CC BY-SA 4.0
TSB 36778