number carved in stone covered with lichen 1815

abstract aged anno annum areolate battle born botany carved cemetery century chronology clean cleaning close common covered craftsmanship crustose cryptogamia cryptogamic cryptograms date decade died dimelaena discolored domini empire era etched events exile funerary geologic geology gravestone growth historical history lepraria leprose lichen lichenology macrolichen masonry millenium napolean napoleanic neglect neglecta number numerology obscuratum oreina ottoman polsporina president rhizocarpon rock sandstone simplex spores stone texture textured thalli thallus timestamp ugly unsightly uss variety war waterloo year