Lichens marins - Ramalina implexa (Nyl.) Krog. forme ramicole.

Ramalina implexa (Nyl.) Krog. forme ramicole.

Ramalina implexa (Nyl.) Krog. forme ramicole.

Alectoria arabum auct. europ. non Dill. ex Ach.

Ramalina arabum auct. europ. non Dill. ex Ach.

Description

Thallus in a small pendulous bush, 5-12 cm long, formed of fine tangled strips, more or less hollowed out with longitudinal folds, with, especially towards the base, whitish longitudinal streaks, the branches are frequently terminated by an arborescence of fine branches arranged in a “fishhook” or “hook” shape; the general coloring is yellowish gray, greenish gray. Very rare apothecia, spores 15-21 x 6 µm according to the literature. Photobiont: green algae other than Trentepohlia. Cortex: C-, K+ yellow → brown-red, KC+yellow a little orange, P+ red-orange; medulla: C-, KC+ yellow, P+orange. Rare thermophilic Mediterranean species growing on the branches of shrubs and trees bordering marine shores, would be much rarer than Ramalina implexa forme saxicole which comes nearby (but this rarity perhaps comes from the fact that the corticole form is better concealed and more difficult to see in the bushs...).

N.B. Aspect of Alectoria or Usnea.

N.B. Can be confused (and has been!) with Ramalina chondrina but the latter species is Atlantic and C-, K-, KC-, P-.

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 1
Michel DAVID

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 2
Michel DAVID

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 3
Michel DAVID

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 4
Bernard BOUFFINIER

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 5
Michel DAVID

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 6
Bernard BOUFFINIER

Ramalina implexa forme ramicole Corse Bonifacio Plage du Petit Sperone 7
Bernard BOUFFINIER

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