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    <title>DigitalNatura.Org - Caloplaca variabilis</title>
    <link>http://digitalnatura.org/details.php?image_id=6379</link>
    <description><![CDATA[Picture taken at Garraf Park Information Center, on a brick wall, South exposure, vertical, 300 m. altitude.

Common lichen on calcareous rocks and walls.

Crustose lichen, very variable, areolate, thick, with a very typical white marginal area of the thallus and with not a very conspicuous dark prothallus.Apothecia present, with a black disc, with pruina , 1 mm diameter.

It is very variable. It is necessary to compare with existing Rinodina species, very similar in form. I remind you a very good paper on Rinodina with keys:

M. Giralt, X. Llimona (1997) The saxicolous species of the genera Rinodina and Rinodiella lacking spot test reactions in the Iberian Peninsula. Mycotaxon,  Vol. LXII, pp. 175-224.

Armand Tomás Vidal

Nikon Coolpix 4.500

Photoshop and HTLM Editor]]></description>
    <pubDate>Sun, 12 Apr 2026 14:42:35 GMT</pubDate>
      <image>
      <url>http://digitalnatura.org/data/thumbnails/30/vari_copia.jpg</url>
      <title>Caloplaca variabilis</title>
      <link>http://digitalnatura.org/details.php?image_id=6379</link>
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    <item>
      <title>Molt bona</title>
      <link>http://digitalnatura.org/details.php?image_id=6379#comment7383</link>
      <pubDate>Mon, 02 Jul 2007 05:53:09 GMT</pubDate>
      <description><![CDATA[Realment, en tot el mon vegetal costa identificar espècies que són molt variables i que poden induïr a confussions, i que unes bones claus d'identificació són fonamentals.

Molt bona la captura i molt interessant l'explicació.]]></description>
          <category domain="http://digitalnatura.org/details.php?image_id=6379">DigitalNatura.Org - Caloplaca variabilis</category>
              <author><![CDATA[fbaldris@sigmascorpii.com (Francesc Baldrís)]]></author>
              <guid isPermaLink="false">http://digitalnatura.org/details.php?image_id=6379#comment7383</guid>
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