II. Pseudocephalodia.
These are a small and doubtful group of cephalodia which are apparently in very slight connection with the host thallus, and show a tendency to independent growth. They occur as small scales on Solorina bispora[459] and S. spongiosa and also on Lecidea pallida. Forssell has suggested that the cephalodia of Psoroma hypnorum and of Lecidea panaeola might also be included under this head.
Forssell and others have found and described cephalodia in the following families and genera:
Sphaerophoraceae.
Sphaerophorus (S. stereocauloides).
Lecideaceae.
Lecidea (L. panaeola, L. consentiens, L. pelobotrya, etc.).
Cladoniaceae.
Stereocaulon, Pilophorus and Argopsis.
Pannariaceae.