@inbook {3970, title = {Pyrenula}, booktitle = {Lichens of Great Britain and Ireland}, year = {2009}, pages = {776-779}, publisher = {British Lichen Society}, organization = {British Lichen Society}, address = {London}, author = {Orange, A. and Hawksworth, D.L.} } @inbook {2862, title = {Verrucaria}, booktitle = {Lichens of Great Britain and Ireland}, year = {2009}, pages = {931-957}, publisher = {British Lichen Society}, organization = {British Lichen Society}, address = {London}, author = {Orange, A. and Hawksworth, D.L. and McCarthy, P.M. and Fletcher, A.} }