Carbacanthographis acanthoparaphysata

Carbacanthographis acanthoparaphysata is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Papua New Guinea, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein and Robert Lücking. The type specimen was collected by André Aptroot from a primary montane forest in Myola (Owen Stanley Range, Northern Province) at an altitude between 2100 and 2400 m. It is only known to occur at the type locality. The lichen has a whitish-grey to pale yellowish thallus lacking a cortex, but with a black prothallus. Its ascospores number eight per ascus, and are hyaline, measuring 17–20 by 8 μm; they have from 4 to 6 transverse septa and from 0 to 2 longitudinal septa. The specific epithet refers to the paraphyses, which give it an apically warty appearance. Carbacanthographis acanthoparaphysata contains protocetraric acid, a lichen product that can be detected using thin-layer chromatography.