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Images of British Lichens

Dermatocarpon leptophyllodes (Nyl.) Zahlbr.

Thallus with few lobes and a single holdfast, but often many such thalli crowded together, lobes grey to brown above, only slightly tinged green when wet, sometimes pruinose, up to 5mm wide, underside without rhizines, surface studded with black perithecia. Very locally frequent on wet rocks in the north and west, generally on the margins of lochs and rivers where it may be periodically submerged, generally in the "upper riparian zone", above D. luridum.

Refs: Orange (1998), Lichenologist 30: 1-20 (full account, photos); Smith et al. (2009), 373; Thüs & Schultz (2009) (photo); Puntillo (1996), plate 15 (photo, as D. lorenzianum).

Dermatocarpon leptophyllodes, colony
Dermatocarpon leptophyllodes, enlarged view
On wet, riverside rocks, Dartmoor, Devon, August 2011

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© A.J. Silverside
Uploaded December 2011, last modified July 2012