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Cartell: Motos antigues 1de56

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Principal / Líquens / Pleopsidium flavum (=Acarospora oxytona)

Pleopsidium flavum (=Acarospora oxytona)

Pleopsidium flavum (=Acarospora oxytona)





Image Details

Descripción: Picture taken on the 9th April 2007 at "Gorges du Segre" near Bains de Llo, Llo, Oriental Pyrenees, France, on vertical schists,siiliceous rock, iron metal-rich area, 90 º, East oriented, in a place protected from direct rain, no water-tracks, 1380 m. alt. Very scarce in this place, growing almost alone.

It it a lichen related to upland areas giving a yellow colour very evident from a long distance. I got acquainted to this lichen at Montseny and it loves almost vertical surfaces. In Catalonia it appears in Montseny and Pyrenees. I have found it in granite boulders at "Chaos de Targasonne".

Crustose lichen, saxicolous, up to 8 cms (it seems larger in the Pyrenees than in Montseny, Dr. N. Hladun mentions a maximum size of 5 cm for the Montseny lichens) large, thick, bright yellow with a lemon tinge. Convex lobes distinguishes it from Pleopsidium chlorophanum with flat lobes and growing in the alpine stage. Lecanorine apothecia, variable, not only flat as mentioned by V. Wirth but normally flat when young and convex when adult.

A very good illustration by V. Wirth in pag.413 of Història Natural dels Països Catalans . Vol 5 Fongs i Liquens.

Thallus with negative chemical spot reactions, K-, C-, KC-.

Nikon Coolpix 4.500

Autoeye, PH, NI and HTLM Editor
Fecha: 16.04.2007 21:11
Impactos: 1799
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Puntuación: 0.00 (0 Votos)
Tamaño de archivo: 95.4 KB
Envíado por: atomasvidal
Palabras clave: Lichens, Lecanoraceae, liquens, liquenes, Flechten, Pleopsidium, flavum, Acarospora, oxytona, Llo, Oriental, Pyrenees, France.

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Discussion

Autor: Comentario:
Francesc Baldrís
Miembro

Fecha de alta: 29.04.2005
Comentarios: 16028
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Sí que s'ha de veure ben de lluny amb aquesta coloració tant groguenca.

Molt interessant l'explicació.
17.04.2007 07:24 Offline Francesc Baldrís fbaldris at sigmascorpii.com