Fulgogasparrea intensa Aptroot & M. Cáceres, sp. nov.

(Fig. 2A, B)

Saxicolous Fulgogasparrea with thallus and apothecia intensely cinnaber red, thallus margins elongated, lobate, apothecia primordial.

MYCOBANK NO. — MB 839715.

GENBANK. — MZ198742.

TYPE. — Brazil, Sergipe, Poço Redondo, Cajueiros, Trilha Ecoparque, 09°39’43”S, 43°40’18”W, on exposed granite, 15.XI.2018, M. Cáceres & A. Aptroot (holo-, ISE [ISE48030]; iso-, ABL).

DESCRIPTION

Thallus

Spreading, covering an area of up to 5 cm diam., c. 0.2 mm thick, continuous, closely appressed, rimose, cinnabar red; areoles angular, c. 0.5 mm diam., marginal areoles elongated, up to 1 mm long; some central areoles raised and somewhat warty, up to 0.4 mm high, with some punctiform dark depressions without differentiated structures.

Apothecia and pycnidia

Not observed.

CHEMISTRY. — Thallus KOH+ blood red.TLC: An anthraquinone.

ECOLOGY AND DISTRIBUTION. — On exposed granite in Caatinga. Known only from Brazil.