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    <title>DigitalNatura.Org - Buellia stellulata</title>
    <link>http://digitalnatura.org/details.php?image_id=9768</link>
    <description><![CDATA[Picture taken on the 10th May 2008 at Parc de la Pedra Tosca, Bosc de la Tosca, Les Preses, Garrotxa, Catalonia, Spain, on volcanic rocks.

Crustose lichen, white-grey thallus, areolate, areoles separated showing prothallus. Apothecia partly immersed, with evident thalline margin, disc from dark brown to black.

Very similar to Buellia aethalea and very confused. Thallus in Buellia stellulata is more white and in Buellia aethalia is more grey-brown. Apothecia have more thalline margin in B. stellulata than in B. aethalea.

Spot reactions are necessary to distinguish both species:
B. aethalea medulla I+ blue
B. stellulata medulla I-

See: 

C. Perez et alter (2003) Guía dos Liques de Galicia, pag. 130 and pag. 134
Nimmis &amp; Martellos Italic 

Nikon Coolpix 4.500

Autoeye, PH and HTLM Editor]]></description>
    <pubDate>Mon, 13 Apr 2026 15:07:08 GMT</pubDate>
      <image>
      <url>http://digitalnatura.org/data/thumbnails/30/Steae_copia.jpg</url>
      <title>Buellia stellulata</title>
      <link>http://digitalnatura.org/details.php?image_id=9768</link>
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    <item>
      <title>Molt bona</title>
      <link>http://digitalnatura.org/details.php?image_id=9768#comment11434</link>
      <pubDate>Thu, 22 May 2008 05:04:48 GMT</pubDate>
      <description><![CDATA[Molt bona la captura i molt interessant l'explicació. Felicitats.]]></description>
          <category domain="http://digitalnatura.org/details.php?image_id=9768">DigitalNatura.Org - Buellia stellulata</category>
              <author><![CDATA[fbaldris@sigmascorpii.com (Francesc Baldrís)]]></author>
              <guid isPermaLink="false">http://digitalnatura.org/details.php?image_id=9768#comment11434</guid>
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