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Flavoparmelia caperata (L.) Hale forma caperata forme corticole

Synonyms:

Parmelia caperata  (L.) Ach.



Family: PARMELIACEAE

Habitat: Ubiquitous

Description

   Thallus rosette-shaped, loosely appressed, to 20 cm diam., made of lobes, 5-12 mm wide, enlarged and rounded at apices, transversally wrinkled or crumpled (as badly ironed), grey-yellowish, yellowish when dry, green-yellowish, green-apple when moist, often coarsely corrugate, surface entirely covered, and notably towards the center, with granular soredia around pustulate soralia, 0.5-3 mm diam., lower surface blackish towards the center, margins brownish  with simple rhizines. Apothecia rare, pustulous at first, then sessile, to 8 mm diam., disc concave, brown-red, exciple markedly sorediate, concolourous to the thallus. Ascospores colourless, ellipsoid, 15-24 x 9-12 µm. Photobiont: Trebouxioid. Cortex : K-, Medulla and soredia: K- or dull yellow, KC +/- red or slightly orange, never red,, KC+/- reddish, Pd+ pale red-orange,   Not especially maritime but abundant in our prospection area on well-lit rocks or heaths in the aerohaline zone, also on bark of trees. N.B. Not to be confused (although rather difficultly in absence of chemical spot tests) with the much rarer  Flavoparmelia soredians  that has clear oceanic trends and a medulla K+ yellow turning red, the two species potentially growing in combination. Several morphs of this highly variable species are worth to be mentioned: Flavoparmelia caperata f. papillosa of which the thallus and apothecia exciple are covered with small verrucose isidia, 0.2-0.5 mm diam., and Flavoparmelia caperata f. laevissima of which the thallus is devoid of verrucose isidia and of soredia. N.B. When pseudocyphella can be observed, and C+ red, see Flavopunctelia flaventior.







Flavoparmelia caperata forme corticole fertile Lesteven 4
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole fertile Lesteven 3
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole fertile Lesteven 2
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole Châteaulin 2
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole Lesteven 1
Bernard BOUFFINIER



Flavoparmelia caperata fertile Ardèche 1
Jacques HAINE



Flavoparmelia caperata fertile Ardèche 2
Jacques HAINE



Flavoparmelia caperata Coupe apothécie Lugol Ardèche 3
Jacques HAINE



Flavoparmelia caperata Asque Eau + KOH Ardèche 4
Jacques HAINE



Flavoparmelia caperata Asque Lugol Ardèche 5
Jacques HAINE



Flavoparmelia caperata Spores Eau Ardèche 6
Jacques HAINE



Flavoparmelia caperata Spores et paraphyses Bleu Coton Ardèche 7
Jacques HAINE



Flavoparmelia caperata forme corticole Châteaulin 1
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole Lesconil 1
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole Brest 1
Alain GERAULT



Flavoparmelia caperata forme corticole Brest 2
Alain GERAULT



Flavoparmelia caperata forme corticole fertile Ergué-Gaberic 1
Bernard BOUFFINIER



Flavoparmelia caperata forme corticole Lesconil 2
Bernard BOUFFINIER



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