Silva Center for Phycological Documentation: Index Nominum Algarum

The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here

Results from INA database

NameAuthorSourceCitationYear
Cerataulus laevis(Ehrenberg) Ralfs image
Cerataulus laevis f. trimerus_('trimera')Forti image
Cerataulus laevis var. chinensisGrunow image
Cerataulus laevis var. pangeroniLeuduger-Fortmorel image
Cerataulus laevis var. schmidtiiForti Atti R. Ist. Veneto Sci. Lett. ed Arti 69{2}: 1264 1910
Cerataulus laevis var. thermalisGrunow image
Cerataulus laevis var. thomeiLeuduger-Fortmorel image
Cerataulus laevis var. typicus_('typica')Forti image