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Squamarina cartilaginea (With.) P. James

Synonyms:

Family: STEREOCAULACEAE

Habitat: Ubiquitous

Description

    Thallus squamulose, rosette-shaped, to 4-8 cm, consisting of large squamules, 0.5-1 mm thick, margin incised and rounded, pruinose, whitish, white-glaucous, pale grey-greenish when moist, pale brown-yellow to pale grey-yellowish when dry, lower surface darker, faint dark brown. Apothecia numerous, sessile, large, up to 2-3 mm diam., disc slightly convex, tinged-green, brown-redish, carnation-brown, exciple white, distinct but finally excluded. Elliptical spores, simple, 11-16 x 4-6 µm according to the literature, 12-16 x 4-7 according to our measurements. Photobiont: Chlorococcoïd. C-, K-, Pd- or P+ yellow (there are two chemotypes, but the specimen presented here are Pd+, and would be characteristic of the coastal morph). Rare species in our prospecting region because it comes from dry limestone dunes (tonsures) or dunes rich in shell debris and more rarely on limestone or basic rocks, see : Squamarina cartilaginea forme saxicole atlantique and Squamarina cartilaginea forme saxicole méditerranéenne. 

N.B. This species is frequently parasited and notably its apothecia, then turning brown-black to black.







Squamarina cartilaginea La Palue 3
Alain GERAULT



Squamarina cartilaginea La Palue 2
Michel DAVID



Squamarina cartilaginea Keremma
Bernard BOUFFINIER



Squamarina cartilaginea La Palue 4
Alain GERAULT



Squamarina cartilaginea parasité La Palue 1
Michel DAVID



Squamarina cartilaginea Parasité La Palue 2
Michel DAVID



Squamarina cartilaginea La Palue 6
Bernard BOUFFINIER



Squamarina cartilaginea La Palue 5
Michel DAVID



Squamarina cartilaginea La Palue 7
Michel DAVID



Squamarina cartilaginea et Fulgensia fulgens Kerdreux
Michel DAVID



Squamarina cartilaginea Asque La Palue 8
Jacques HAINE



Squamarina cartilaginea Spore La Palue 9
Jacques HAINE



Squamarina cartilaginea Keremma 2
Bernard BOUFFINIER



Squamarina cartilaginea La Palue 10
Bernard BOUFFINIER



Squamarina cartilaginea Tréflez
Bernard BOUFFINIER



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