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Visitants de Pas al PNAE:Flamenc

Visitants de Pas al PNAE:Flamenc
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Principal / Líquens / Tremolecia atrata (=Lecidea Dicksonii)

Tremolecia atrata (=Lecidea Dicksonii)

Tremolecia atrata (=Lecidea Dicksonii)





Image Details

Descripción: Picture taken on the 9th April 2007 at "Gorges du Segre", Bains de Llo, Llo, Oriental Pyrenees, France, on siliceous rock rich in iron, East exposure, 75 º inclination, 1.380 m. alt.,associated to Acarospora sinoptica and Acarospora smaragdula.

Cosmopolite species, upland places up to the alpine stage. In Catalonia it is only mentioned at Montseny mountain . It is a species loving iron rich rocks, wattered and even in windy places.

Saxicolous, siliceous, crustose thallus, normally carmine red but sometimes, as in the current case, brown, cracked-areolate, limited by a black prothallus, although not always visible.Immersed apothecia, black disc, max. 0,5 mms in diameter, round form or elongate if pressed by other areoles. presence of conidia. Easy to confuse with Rhizocarpon oederi, a lot of times both grow together but the latter has gyrose apothecia.

No chemical spot reactions.

I had difficulties in determining this lichen because I was used to the typical coloured form. I always remind the wonderful Nicholson illustration in one of my first books of lichens by Frank Brightman but it was misleading in this case.

A similar colour form can be found at pag. 434 of Frank S. Dobson Lichens book.

Armand Tomás Vidal

Nikon Coolpix 4.500

PH and HTLM Editor.
Fecha: 12.04.2007 21:07
Impactos: 1075
Descargas: 0
Puntuación: 0.00 (0 Votos)
Tamaño de archivo: 79.1 KB
Envíado por: atomasvidal
Palabras clave: Lichens, iron, liquens, liquenes, Flechten, Tremolecia, atrata, Lecidia, Dicksonii, Llo, Oriental, Pyrenees, France.

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Discussion

Autor: Comentario:
Francesc Baldrís
Miembro

Fecha de alta: 29.04.2005
Comentarios: 16027
Molt bona

Imagino les dificultats per identificar segons quins líquens que, com amb moltes espècies del mon natural, s'assemblen molt. Molt maca la captura. Felicitats.

Molt interessant l'explicació.
13.04.2007 06:58 Offline Francesc Baldrís fbaldris at sigmascorpii.com