<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <TITLE>Fuscidea gothoburgensis (images of British lichens)</TITLE> <META NAME="description" CONTENT="Photographs of Fuscidea gothoburgensis (lichen)"> <META NAME="keywords" CONTENT="image, images, photograph, lichen, Fuscidea"> <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="Fuscidea_cyathoides.html" target="_top"><img src="previous.gif" border=0 alt="Previous page" align=left></a> <a href="Fuscidea_kochiana.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>Fuscidea gothoburgensis</b></font><font size=4> (H.Magn.) V.Wirth &amp; Vzda</font></p> <p><br></p> <table width=840 border=0> <tr><td><div align=justify><font face="arial" size=2>Thallus of pale- to brown-grey, dispersed, flat to somewhat convex areoles, seated on a dark grey to black prothallus that is clearly exposed between the areoles (compare <i><a href="Fuscidea_recensa.html">F.&nbsp;recensa</a></i>), soralia usually present, rounded, whitish- to greenish-grey, chemical tests (C, K, Pd) negative; apothecia rare, brownish black, sessile, spores ellipsoid. Very local on hard, siliceous rocks in the north and west, mainly in the Scottish Highlands.</p> <p>Refs: Smith <i>et al.</i> (2009), 409; Purvis <i>et al.</i> (1992), 253; Wirth (1995), 1: 400, 405 (photo, as <i>F.&nbsp;maculosa</i>, a variant now included in <i>F.&nbsp;gothoburgensis</i>).</p> <p><i>Fuscidea</i> is part of the very large '<i>Lecidea</i> group' of lichens &ndash; crustose species with dark or black apothecia that lack distinct 'thalline' margins, though they will usually have differentiated 'proper' margins the same colour as the disk. Microscopic examination of mature apothecia (and sadly they are often <i>not</i> mature) is usually necessary even to be sure of the genus, and field identification of all but a few distinctive species is risky. Dobson (2011), pp. 236-7, gives an invaluable analysis of the component genera.</font></div></td></tr> </table> &nbsp; <table> <tr><td align=center><img src="Fuscidea_gothoburgensis_DSCN4404.jpg" border=1 vspace=5 alt="Fuscidea gothoburgensis"></td></tr> <tr><td align=center><img src="Fuscidea_gothoburgensis_DSCN4408.jpg" border=1 vspace=5 alt="Fuscidea gothoburgensis"></td></tr> <tr><td align=center><font face="arial" size=2>On coastal pebble, Kingston on Spey, Morayshire, August 2010 (BLS meeting)</font></td></tr> </table> <p><br></p> <table border=0> <tr><td><a href="Fuscidea_cyathoides.html" target="_top"><img src="baru6.gif" border=0 alt="Previous page"></a></td> <td width="50">&nbsp;</td> <td><a href="Fuscidea_kochiana.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 March 2011, last updated July 2012</p> </font> </blockquote> </td></tr> </table></center> </BODY> </HTML>