Français English

Porina chlorotica (Ach.) Müll. Arg.

Synonyms:

Family: PORINACEAE

Habitat: Ubiquitous

Description

    Thallus crustose, thin, not endolithic, smooth, rimose to areolate, cracked, grey-brownish, brown-greenish, olive-brown, burgundy or with typicalnlivid-green tinge, prothallus absent or dark brownish in case of mosaics. Perithecia superficial, half immersed in the thallus, low height, hemispherical, 0.2-0.3 mm diam., apices rounded without distinct ostiole, blackish. Ascospores colourless, fusiform to narrowly ellipsoid, 3-septate, 15-22 (30) x 4-5 (6) µm according to literature, 20-26 x 5-6 µm  according to our measures. Pycnidia hemispherical, 0.1 mm diam., black. Photobiont: Trentepohlia.(directly visible on the thallus in orange spot form or in thallus rips or scratchs. Chemical spot tests negative. Not especially maritime, on damp shaded siliceous rocks, on Northern walls of chapels and churches. N.B. Near the seashore, see also Porina curnowii of which the thallus is greyer and ascospores 7-septate.







Porina chlorotica Ardennes 1
Jacques HAINE



Porina chlorotica Muret humide en pierres 3
Bernard BOUFFINIER



Porina chlorotica Ardennes 3
Jacques HAINE



Porina chlorotica Muret humide en pierres 2
Bernard BOUFFINIER



Porina chlorotica Le Loc'h 1
Bernard BOUFFINIER



Porina chlorotica Le Loc'h 2
Bernard BOUFFINIER



Porina chlorotica Le Loc'h 3
Bernard BOUFFINIER



Porina chlorotica Le Loc'h 4
Bernard BOUFFINIER



Porina chlorotica Muret humide en pierres 1
Bernard BOUFFINIER



Porina chlorotica Muret humide en pierres 4
Bernard BOUFFINIER



Porina chlorotica Muret humide en pierres 5
Jacques HAINE



Porina chlorotica Muret humide en pierres 6
Jacques HAINE



Porina chlorotica Muret humide en pierres 7
Jacques HAINE



Porina chlorotica Photobionte 8
Jacques HAINE



Porina chlorotica Coupe Lugol 9
Jacques HAINE



Porina chlorotica Asques et spores Lugol 10
Jacques HAINE



Porina chlorotica Spores Bleu Coton 11
Jacques HAINE



Porina chlorotica Eau 12
Jacques HAINE



Porina chlorotica Coupe eau Mur de chapelle Folgoët 1
Jacques HAINE



Porina chlorotica Asque eau Mur de chapelle Folgoët 2
Jacques HAINE



Porina chlorotica Asques Bleu Coton Mur de chapelle Folgoët 3
Jacques HAINE



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