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    <title>DigitalNatura.Org - Rhizocarpon obscuratum (= R. reductum)</title>
    <link>http://digitalnatura.org/details.php?image_id=5477</link>
    <description><![CDATA[Picture taken at Turó Catiu d'Or, Montseny, Barcelona, 1.650 m. altitude, well light place.

Common lichen in Europe, on smooth siliceous rocks and graveyards. In Catalonia, it appears always on siliceous rocks in rainy areas, Montseny, Pyrenees and in some Maresma places.

Crustose lichen, saxicolous, thallus grey to brown, cracked, areolate, with a clear black prothallus at the borders. Lecideine apothecia, black, among the areoles, deformed, in some cases uo to a 1 mm in diameter, 

Thallus K-
Medulla K+ yellow

Nikon Coolpix 4.500

PH and HTLM Editor]]></description>
    <pubDate>Mon, 13 Apr 2026 00:47:23 GMT</pubDate>
      <image>
      <url>http://digitalnatura.org/data/thumbnails/30/OBSC_COPIA.JPG</url>
      <title>Rhizocarpon obscuratum (= R. reductum)</title>
      <link>http://digitalnatura.org/details.php?image_id=5477</link>
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    <item>
      <title>Molt bona</title>
      <link>http://digitalnatura.org/details.php?image_id=5477#comment6562</link>
      <pubDate>Sat, 31 Mar 2007 18:50:36 GMT</pubDate>
      <description><![CDATA[Molt bona captura i interessant comentari. Felicitats.]]></description>
          <category domain="http://digitalnatura.org/details.php?image_id=5477">DigitalNatura.Org - Rhizocarpon obscuratum (= R. reductum)</category>
              <author><![CDATA[fbaldris@sigmascorpii.com (Francesc Baldrís)]]></author>
              <guid isPermaLink="false">http://digitalnatura.org/details.php?image_id=5477#comment6562</guid>
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