<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <TITLE>Caloplaca aractina (images of British lichens)</TITLE> <META NAME="description" CONTENT="Photographs of Caloplaca aractina (lichens)"> <META NAME="keywords" CONTENT="image, images, photograph, lichen, Caloplaca"> <META NAME="Author" CONTENT="Alan J. Silverside"> </HEAD> <BODY bgcolor="#000000" background="Icback_dr.jpg" TEXT="#000000" LINK="#3672a4" VLINK="#3672a4"> &nbsp; <center><table border=0 bgcolor="#ffffff" width=1000> <tr><td> <a href="Caloplaca_alociza.html" target="_top"><img src="previous.gif" border=0 alt="Previous page" align=left></a> <a href="Caloplaca_arcis.html" target="_top"><img src="next.gif" border=0 alt="Next page" align=right></a> <blockquote> <h5 align=center><font color="#b22222" face="arial">&nbsp;<br>lastdragon.org</font></h5> <h2 align=center><font color="#b22222">Images of British Lichens</font></h2> <hr width="50%"> <p><br></p> <center> <p><font size=5><b>Caloplaca aractina</b></font><font size=4> (Fr.) H&auml;yr&eacute;n</font></p> <p><br></p> <table width=860 border=0> <tr><td><div align=justify><font face="arial" size=2>Thallus dark blue-grey to &plusmn; black, somewhat lumpy-areolate or cracked but surface smooth, with a slight oily appearance and lacking isidia or blastidia; apothecia with brownish-orange, minutely roughened discs and thick, dark grey, thalline margins; the whole lichen closely resembling the widespread <i><a href="Caloplaca_chlorina.html">C.&nbsp;chlorina</a></i>, but lacking isidiate blastidia and differing somewhat microscopically. A very rare species of coastal rocks, on the Lizard Peninsula in Cornwall, recently found in N.Wales, uncertain elsewhere.<br>British Red Data Book species: critically endangered (but this assessment now outdated).</p> <p>Refs: Smith <i>et al</i>. (2009), 253; Purvis <i>et al.</i> (1992), 146; Lichen Atlas of the British Isles 6: 234 (2001).</p> <p>In recent years, <i>C.&nbsp;aractina</i> has been treated as confined in Britain to the Lizard Peninsula, where a number of sites are now known. In the <i>Lichen Atlas of the British Isles</i>, other west-coast records, as in Purvis <i>et al.</i> (<i>op.cit.</i>), are considered to have referred to <i>C.&nbsp;ceracea</i>. However, <i>C.&nbsp;aractina</i> has recently been found and authenticated at now two coastal sites in N. Wales (<a href="http://www.ispotnature.org/node/337042" target="_blank">http://www.ispotnature.org/node/337042</a>), opening up the possibility that this rare species awaits discovery (or re-discovery?) elsewhere.</p> <p>FGBI: <a href="http://fungi.myspecies.info/all-fungi/caloplaca-aractina" target="_blank">http://fungi.myspecies.info/all-fungi/caloplaca-aractina</a></font></div></td></tr> </table> </center></blockquote><center> <table> <tr><td align=center><img src="Caloplaca_aractina_IMG_7934.jpg" border=1 vspace=5 alt="Caloplaca aractina"></td></tr> <tr><td align=center><img src="Caloplaca_aractina_IMG_7948.jpg" border=1 vspace=5 alt="Caloplaca aractina"></td></tr> <tr><td align=center><img src="Caloplaca_aractina_IMG_7974.jpg" border=1 vspace=5 alt="Caloplaca aractina, close view"></td></tr> <tr><td align=center><img src="Caloplaca_aractina_IMG_7989.jpg" border=1 vspace=5 alt="Caloplaca aractina, close view"></td></tr> <tr><td align=center><font face="arial" size=2>On boulders above shore, near Coverack (Lizard Peninsula), Cornwall, June 2013</font></td></tr> </table> </center><blockquote><center> <p><br></p> <table border=0> <tr><td><a href="Caloplaca_alociza.html" target="_top"><img src="baru6.gif" border=0 alt="Previous page"></a></td> <td width="50">&nbsp;</td> <td><a href="Caloplaca_arcis.html" target="_top"><img src="baru8.gif" border=0 alt="Next page"></a></td></tr> </table> </center> <p><br></p> <p><hr></p> <center><font face="Arial" size=2> <p><b><a href="index.html" target="_top">Lichens HOME PAGE</a> | <a href="indexP.html" target="_top">Index of Species</a> | <a href="http://www.lastdragon.org/conditions.html" target="_top">Conditions of Use and e-mail contact</a> | <a href="references.html" target="_top">References</a> | <a href="http://www.lastdragon.org/home.html" target="_top">Site Home Page</a></b></p> </font></center> <p><br></p> <font face="Arial" size=2> <p>&copy; A.J. Silverside<br> Uploaded October 2013, updated January 2016 </p> </font> </blockquote> </td></tr> </table></center> </BODY> </HTML>