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Fulgensia poeltii Llimona
Family: Teloschistaceae
Fulgensia poeltii image
Thallus: placodioid, monophyllus, up to 2 cm in diam. upper surface: white, yellow or orange, dense, covered with whitish pruina, with bullate schizidia upper cortex: paraplectenchymatous, 25-50 µm thick, including a up to 40 µm thick epinecral layer medulla: white, 40-150 µm thick; algal layer: indistinct, 40-125 µm thick, with scattered algae cells dispersed through the whole medulla or very rarely continous lower cortex: absent lower surface: gelatinized, compressed hyhae Apothecia: common, sessile, up to 1.25 mm diam. disc: flat, becoming concave in old ones margin: smooth, brighter than disc asci: clavate, 8-spored ascospores: hyaline, simple, ellipsoid or dumb-bell shaped, 11-16 x 4-5.2 µm Pycnidia: not found Secondary metabolites: anthraquinone pigments. Substrate and ecology: on soil in arid areas World distribution: rare, only previously known from dry areas in Spain Sonoran distribution: very rare, so far only known from Baja California at about 2300 m.