number carved in stone covered with lichen 1773

abstract aged amazing american anno annum antarctic areolate born botany cemetery century chronology circle clean cleaning colonial common company cook craftsmanship cryptogamia cryptogamic cryptograms date decade died dimelaena discolored domini era events founded funerary galaxy geologic geology grace gravestone historical history justice lepraria leprose lichenology macrolichen manifesto masonry mdcclxxiii messier millenium museum neglect neglecta numerology obscuratum oreina pemberton polsporina reconstruction rhizocarpon rock simplex society spores stonework texture thalli thallus timestamp ugly unsightly whirlpool