Cladonia polydactyla (images of British lichens)

Podetia grey, often intensely so, extremely variable, unbranched to weakly branched, commonly terminating in regular to irregular cups, farinose-sorediate above, squamulose towards the base, apothecia bright red, terminal and on the cup margins. One of several species with often conspicuous red apothecia and requiring careful identification. On peat, trunks and rotting wood, widespread and generally common.

Refs: Smith et al. (2009), 333; Purvis et al. (1992), 199; Dobson (2005), 131 (photo); Dobson (2011), 139-40 (photo); Whelan (2011), 77 (photo); van Haluwyn et al. (2009), 216-7 (photo); van Herk & Aptroot (2004), 152-153 (photo); Wirth (1995), 1: 298, 334 (photo); Krog et al. (1994), 165 (photo); Puntillo (1996), plate 13 (photo, dry); Thomson (1967) 63, plate 1 (photo); Lichen Atlas of the British Isles 2: 408 (1996).

lastdragon.org

Images of British Lichens