Sparria endlicheri (Garov.) Ertz & Tehler forme maritime.

    Thallus crustose more or less spreading and sometimes rosette-like, rather thick 0.5-1 mm thick, very uneven, cracked, wrinkled, bumpy with growths (as if toothpaste had been spread), whitish-grey somewhat lilacin when young and in light and dry places, grey-lilac, greyish in more humid and less light places, becoming pale greyish-brown when drying or in herbarium; margin sometimes giving the appearance of being lobed, light brown, dark brown, not zoned. Upper surface covered with numerous soredia 50-100 µm in diameter agglomerated in sometimes globular-looking packets with crystals in their centre, greyish-brown-pinkish when young, then ochraceous brown or pale greyish-brown. Apothecia very rare, ovoid, rounded, elongated, etc. with slightly angular edge, 0.4-0.8 mm, appearing greyish from the bloom which covers them. Presence of pycnidia buried in the thallus, barely visible in the form of small dots 100-120 µm in diameter, blackish. Spores ovoid, enlarged at the top, 3-5 times septate, 14-20 x 5-7 µm. C+ red, K+ yellow or K- according to the authors (low K+ yellow according to our observations), KC+ red, P-, UV-. Photobiont: Trentepohlia. Form (or type!) occurring on the vertical surfaces of siliceous rocks or under overhangs in places sheltered from direct rain and sun from the xeric supralittoral zone to the aerohaline zone receiving splashes of sea water and sea spray, it seems linked by intermediaries with the taxa coming further inland which have a more grayish thallus and larger globular masses of soredia.

N.B. Species of Sclerophytetum circumscriptae frequently associated with Ingaderia vandenboomi (Llimonea sorediata) with black hypothallus and Rocellographa (Peterjamesia) circumscripta but also with certain forms of Dirina massiliensis forma sorediata.