Pertusaria pluripuncta Nyl.

    Thallus crustose, smooth to rimose or cracked, markedly verrucose towards the center, sometimes bumpy, pale grey-yellowish, yellowish, pale ochre-yellowish when dry, more yellowish-greenish when moist, prothallus most often visible with sections pale grey-yellowish and dark grey-black. Seldom fertile, and in most cases apothecia are limited to ochre-yellow concave or olive-brown dots (suggesting die dots); for the fertile morph, see Pertusaria pluripuncta f. fertile). C+ orange, K+ yellowish, KC+ orange, Pd+ red-orange (possibly faint). Distribution restricted, only on acid rocks in the xeric supralittoral and aerohaline zones where it may form large conspecific colonies and in that case with a conspicuous dark prothallus delimiting mosaic. Not to be confused with Pertusaria flavicans which is sorediate, yellow, Pd-, without black prothallus and grows on less exposed rocks.