Trimmatothelopsis sphaerosperma

Trimmatothelopsis sphaerosperma is a species of crustose lichen in the family Acarosporaceae. Originally described in 2011 as Acarospora sphaerosperma from dolomite in Arkansas, it was transferred to the genus Trimmatothelopsis in 2021 based on morphological and anatomical features, because DNA sequencing attempts were unsuccessful in that treatment. The species forms scattered waxy white areoles (small surface patches) with small red-brown apothecial discs and is distinguished by its tall hymenium (spore-bearing layer); asci that contain more than 100 mostly spherical ascospores; and long, rod-shaped conidia (asexual spores). It grows on calcium-rich rocks including dolomite, limestone, and chert, and has been recorded in North America, Europe, and Asia....read more on Wikipedia.