Previous page Next page
 
lastdragon.org

Images of British Lichens



Heterodermia leucomela (L.) Poelt


Foliose, with ascending to erect, grey, strap-shaped lobes margined with conspicuous, black cilia, soredia, if present, confined to undersides of the lobes; apothecia unknown in Britain. Amongst coastal rocks or in lightly grazed, cliff-top turf, sometimes with Teloschistes flavicans, now very rarely on trees; formerly in a number of localities in the south but now nationally rare, restricted to a very few sites in south-west England and western Wales, where it depends on continuingly appropriate management.
British Red Data Book species: endangered; scheduled protected species, Wildlife and Countryside Act 1981.

Refs: Smith et al. (2009), 431; Purvis et al. (1992), 271 (as H. leucomelos); Dobson (2005), 187 (photo); Dobson (2011), 192 (photo); Jahns (1983), 250-1 (photo, as H. leucomelos, printed too blue in my copy); Church et al. (1996), 46 (as H. leucomelos); Brodo et al. (2001), 338-9 (photo); McCune & Geiser (2009), 138 (photo).

I have followed Smith et al. and other recent authors in using the spelling 'leucomela', but this correction of the original spelling 'leucomelos' is arguable, or at least was based on a now outdated rule in botanical naming, but may be valid for other reasons. Greek adjectival endings are complex!

FGBI: http://fungi.myspecies.info/all-fungi/heterodermia-leucomela

Heterodermia leucomela
Heterodermia leucomela
In rock crevice on sea-cliff, the Lizard, Cornwall, June 2010
 
Heterodermia leucomela
Heterodermia leucomela
In cliff-top turf, with Teloschistes flavicans, Pembrokeshire, May 2009


Previous page   Next page



Lichens HOME PAGE | Index of Species | Conditions of Use and e-mail contact | References | Site Home Page


© A.J. Silverside
Uploaded July 2009, last updated January 2016