Peltigera membranacea (images of British lichens)

A large "dog-lichen" with the upper surface of fresh thallus bluish- to brown-grey, ash-grey when dry, densely felted-tomentose, bullate, lacking isidia; lower surface white-tomentose, with unbranched, "fang-like" rhizines with fine, spreading, "bottle-brush" hyphal terminations (lens needed). Widespread and often common on mossy boulders, tree-bases and in short, dampish turf, including in lawns and on dunes. P. praetextata can resemble this species very closely.

Refs: Vitikainen (1994) 62-63 (photo); Smith et al. (2009), 670; Purvis et al. (1992), 443; Dobson (2005), 318 (photo); Dobson (2011), 319 (photo); Jahns (1983), 238-239 (photo); Whelan (2011), 126 (photo); Nordic Lichen Flora (2007) 3: 123, 196 (photo); Brodo et al. (2001), 513, 515 (photo); Hinds & Hinds (2007), 368 (photo); McCune & Geiser (2009), 239 & 251 (photos).

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Images of British Lichens