Français English

Caloplaca aquensis Houmeau & Cl. Roux

Synonyms:

Family: TELOSCHISTACEAE

Habitat: Mesic supralittoral zone

Description
      Thallus crustose in general more or less endolithic, very thin and inconspicuous, sometimes epilithic and relatively thick and then cracked and areolate, dirty whitish, pale ochraceous, yellowish-gray. Quite numerous apothecia, spread over the entire thallus, at first a little buried in the thallus then partially sessile, 0.3-1 mm in diameter, disc flat to rarely slightly convex, pale orange, orange, orange-ochraceous (NB in areas receiving seawater splashes the tinges may become a little purple and wine-red and finally blackish-brown in decay), rim thick, persistent, concolor or lighter. Utriform asci with 8 spores. Hyaline, polarilocular, elliptical spores (sometimes unsymmetrical and in a "drop of water"), 13-19 x 6-7.5 (9) µm with an equatorial thickness of 3-5 (6) µm according to the literature, 13 -18 (23) x (5) 6-9 μm according to M. Bertrand; 18-20 (23) x 8-10 µm with a septum of (5) 7-10 µm according to our measurements. Simple, unbranched septate paraphyses (very rarely at the top which is very slightly swollen). Photobiont: chlorococcoid. Thallus: K-, apothecia: K + purple. Species with thermophilic tendencies rare coming in edge of sea on the rocks of hard limestone in the xeric and mesic zone.






Caloplaca aquensis Roscanvel 1
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 2
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 3
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 4
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 5
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 6
Bernard BOUFFINIER



Caloplaca aquensis Roscanvel 7
Bernard BOUFFINIER



Caloplaca aquensis forme de la zone de projection d'eau de mer Roscanvel 8
Bernard BOUFFINIER



Caloplaca aquensis forme de la zone de projection d'eau de mer Roscanvel 9
Bernard BOUFFINIER



Caloplaca aquensis forme de la zone de projection d'eau de mer Roscanvel 11
Bernard BOUFFINIER



Caloplaca aquensis Coupe apothécie KOH Roscanvel 12
Jacques HAINE



Caloplaca aquensis Coupe apothécie écrasée KOH & Lugol Roscanvel 13
Jacques HAINE



Caloplaca aquensis Asque KOH Roscanvel 14
Jacques HAINE



Caloplaca aquensis Asque et spores KOH et Lugol Roscanvel 14
Jacques HAINE



Caloplaca aquensis Spores Bleu Coton Roscanvel 16
Jacques HAINE



Caloplaca aquensis Spores KOH et Lugol Roscanvel 17
Jacques HAINE



Caloplaca aquensis Spores KOH Roscanvel 18
Jacques HAINE



Return
Content : Alain Gérault - Website development : Sylvain Ard - Hosting : Online.net