<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <TITLE>Fuscidea cyathoides (images of British lichens)</TITLE> <META NAME="description" CONTENT="Photographs of Fuscidea cyathoides (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="Fulgensia_fulgens.html" target="_top"><img src="previous.gif" border=0 alt="Previous page" align=left></a> <a href="Fuscidea_gothoburgensis.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 cyathoides</b></font><font size=4> (Ach.) 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 pale grey, usually with brown tinges, to grey-brown, cracked areolate, margins often limited by a black prothallus that marks out clear boundaries with other thalli of the same or other species, soralia usually absent (var. <i>cyathoides</i>, shown here), sometimes with scattered, yellowish or greenish soralia (var. <i>sorediata</i>); apothecia brownish black, sessile or initially set in the thallus, margins initially conspicuous, paler, often flexuose, later often obscured as the apothecium develops, spores kidney-bean shaped. In lichen mosaics on hard, siliceous rocks, northern and western, often very common. Chemical tests (K+ brownish-yellow, Pd+ red) help separation from rarer species of the genus.</p> <p>Refs: Smith <i>et al.</i> (2009), 408; Purvis <i>et al.</i> (1992), 253; Dobson (2005), 177 (photo); Dobson (2011), 183 (photo); Allen (2007), 38 (photo); Dalby &amp; Dalby (2005), 20 &amp; 41 (photos); Whelan (2011), 96 (photo); Wirth (1995), 1: 400, 401 (photo); Wirth, Hauck &amp; Schulz (2013), 1: 487 (photo); Moberg &amp; Holm&aring;son (1984), 126 (photo); Holien &amp; T&oslash;nsberg (2008), 161 (photo); Valc&aacute;rcel <i>et al.</i> (2003), 192-3 (photo); Puntillo (1996), plate 18 (photo).</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.</p> <p>FGBI: <a href="http://fungi.myspecies.info/all-fungi/fuscidea-cyathoides" target="_blank">http://fungi.myspecies.info/all-fungi/fuscidea-cyathoides</a></font></div></td></tr> </table> &nbsp; <table> <tr><td align=center><img src="Fuscidea_cyathoides_IMG_3404.jpg" border=1 vspace=5 alt="Fuscidea cyathoides"></td></tr> <tr><td align=center><font face="arial" size=2>On stabilised coastal shingle, Kingston on Spey, Morayshire, August 2010 (BLS meeting)<br>&nbsp;</font></td></tr> <tr><td align=center><img src="Fuscidea_cyathoides_IMG_2923.jpg" border=1 vspace=5 alt="Fuscidea cyathoides"></td></tr> <tr><td align=center><img src="Fuscidea_cyathoides_IMG_2919.jpg" border=1 vspace=5 alt="Fuscidea cyathoides"></td></tr> <tr><td align=center><font face="arial" size=2>On upland boulder, Gleann Leireag, West Sutherland, August 2010<br>&nbsp;</font></td></tr> <tr><td align=center><img src="Fuscidea_cyathoides_IMG_1063.jpg" border=1 vspace=5 alt="Fuscidea cyathoides"></td></tr> <tr><td align=center><font face="arial" size=2>On exposed rock, Great Cumbrae, Clyde Isles, April 2010</font></td></tr> </table> <p><br></p> <table border=0> <tr><td><a href="Fulgensia_fulgens.html" target="_top"><img src="baru6.gif" border=0 alt="Previous page"></a></td> <td width="50">&nbsp;</td> <td><a href="Fuscidea_gothoburgensis.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. 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