Henrici, A., 1996
A key to the higher groups with tabulations of the species.
||Cambrian Institute of Mycology
||All the British species then known.
||With x8 or x10 hand lens (also useful to examine under a Compound Microscope).
||Many can be done in the field, but others, especially Leptonia require microscopy.
||The other genera are mostly straightforward, but Leptonia will always be a challenge.