B. J.  Coppins, James, P. W., and Orange, A., ?Anisomeridium?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 148-150.

O. W.  Purvis and Orange, A., ?Acrocordia?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 133-135.

A.  Orange and Hawksworth, D. L., ?Pyrenula?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 776-779.