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    <title>DigitalNatura.Org - Physconia grisea</title>
    <link>http://digitalnatura.org/details.php?image_id=6585</link>
    <description><![CDATA[Picture taken on the 1st July 2007 at Aiguablava, Costa Brava, Girona, on a wall with calcareous stones, 20 m. altitude.

A very common nitrophilous lichen.

Corticolous and saxicolous, foliose thallus, with rizhinae, very variable in colour,but more or less gray with blue or green tinge, with pruina, and a lot of soredia.

Easy to mistake with other Physconia and even with Physcia caesia.

Genus Physconia needs further studies because there are some species that are not very homogeneous.

Armand Tomás Vidal

Nikon Coolpix 4.500

Autoeye, PH and HTLM Editor]]></description>
    <pubDate>Sun, 12 Apr 2026 09:27:30 GMT</pubDate>
      <image>
      <url>http://digitalnatura.org/data/thumbnails/30/grisae_copia.jpg</url>
      <title>Physconia grisea</title>
      <link>http://digitalnatura.org/details.php?image_id=6585</link>
    </image>
    
    <item>
      <title>Molt bona</title>
      <link>http://digitalnatura.org/details.php?image_id=6585#comment7616</link>
      <pubDate>Fri, 27 Jul 2007 04:50:03 GMT</pubDate>
      <description><![CDATA[Molt bon macro i molt interessant l'explicació. Felicitats.]]></description>
          <category domain="http://digitalnatura.org/details.php?image_id=6585">DigitalNatura.Org - Physconia grisea</category>
              <author><![CDATA[fbaldris@sigmascorpii.com (Francesc Baldrís)]]></author>
              <guid isPermaLink="false">http://digitalnatura.org/details.php?image_id=6585#comment7616</guid>
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