Lecania cyrtella
≡Lecidea cyrtella Ach., Methodus: 67 (1803).
Description : Flora (1985: 209).
N: S: Throughout, on introduced, deciduous trees, commonly in the Xanthorion community. With a widespread holarctic distribution in the Northern Hemisphere where it is common on eutrophic bark (especially on Acer, Fraxinus, Sambucus), also in Australia (Purvis et al. 1992; Nimis 1993; Santesson 1993; Esslinger & Egan 1995; Filson 1996; Lumbsch et al. 2001; Coppins 2002b; McCarthy 2003c, 2006; Nimis & Martellos 2003; Santesson et al. 2004; Van den Boom & Ryan 2004b).
Cosmopolitan
Illustrations : Ozenda & Clauzade (1970: 599, fig. 497); Foucard (1990: Pl. 119); Dobson (1992: 163; 2000: 182; 2005: 203); Wirth (1995b: 446); Boqueras (2000: 206, fig. 30A–C); Lumbsch et al. (2001: 12).
Lecania cyrtella is characterised by: the corticolous habit; and 8–12(–16)-spored asci.
