When Dandy described Galium tricornutum, he cited G. tricorne Stokes (1787) pro parte as a synonym, but explicitly excluded the type (specimen) of G. tricorne from the new species G. tricornutum.
In his description of Galium tricornutum, Dandy used G. tricorne Stokes (1787) as a partial synonym and excluded the type specimen of G. tricorne from being part of G. tricornutum.