The mummy lichen, Pseudevernia furfuraceae (L.) Zopf, of the Farlow Herbarium is approximately 2,500 years old. It was found on a female Egyptian mummy from Thebes during the unwrapping process by the Montreal Natural History Society in 1859. The lichen was purposely placed on the mummy’s chest as part of the preservation process prior to burial. The Society sent a piece of the lichen to Edward Tuckerman, a renowned lichenologist at that time, for identification. The lichen specimen came to the Farlow Herbarium when Tuckerman's collection was purchased upon Mr. Tuckerman’s death in 1886.