A study of the lichens in two cemeteries

Observation - A study of the lichens in two cemeteries . Description: A study of abundance of the lichens in two cemeteries. The lichens seen at each of the two cemeteries on different aged gravestones. On the 6th gravestone (likely from year 1959) there was abundant black crustose lichen.

A study of abundance of the lichens in two cemeteries. The lichens seen at each of the two cemeteries on different aged gravestones. On the 6th gravestone (likely from year 1959) there was abundant black crustose lichen.