THALLUS: grayish to somewhat yellowish, verruculose, shiny
APOTHECIA: 0.6-2.0(-2.7) mm, margin thin, disc yellowish-pinkish-orangish and heavily white pruinose
SPORES: 8 per ascus, 29-45 × 19-28 µm
CHEMISTRY: disc and medulla under apothecia C+ and KC+ red (gyrophoric acid); thallus UV+ yellow (lichexanthone)
Tropics to subtropics.
Common Name: African Saucer Lichen
Whitish rough crust lichen with large thick-rimmed heavily-pruinose apothecia on bark.
Hardwood bark, on coastal plain.
