Leptogium gelatinosum (images of British lichens)

Thallus variable, gelatinous, papery when dry, lobes reddish to dark brown smooth to irregularly wrickled, lacking isidia, margin smooth to uneven or somewhat ragged, not fimbriate; apothecia frequent, smooth, coloured as the lobes or somewhat more orange on darker lobes. Widespread and locally frequent amongst mosses on rocks, walls, soil and sometimes tree-bases, in calcareous situations.

Refs: Smith et al. (2009), 540; Purvis et al. (1992), 354 (in major part); Dobson (2011), 254 (photo only); Nordic Lichen Flora (2007) 3: 35, 185 (photo); van Herk & Aptroot (2004), 238-9 (photo); Wirth (1995), 2: 548-9 (photo); Holien & Tønsberg (2008), 130 (photo); Arup et al. (1997), 184 (photo); Brodo et al. (2001), 405 (photo).

The similar lichen with fimbriate lobe-margins (previously confused with L. lichenoides) is now separated as L. pulvinatum.

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Images of British Lichens