New notes to accompany Claire Dalby's Lichens on Trees poster

Pat Wolseley has written a set of notes to accompany Claire Dalby's Lichens on Trees poster. Read about how the arrangement of the poster's lichens indicates species that tolerate similar environmental conditions including man-made pollution.

All future purchases of the poster will be accompanied by the double-sided A4 sheet of notes. If you have previously bought posters, the notes can be freely downloaded from the BLS Shop at