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

PYRGODISCUSF. Kitton image
Pyrgodiscus antiquusA.I. Forti & P. Schulz-Danzig image
Pyrgodiscus armatusF. Kitton image
Pyrgodiscus calyciflos(J. Tempère & Brun) De Toni Sylloge algarum 2: 1011 1894
Pyrgodiscus cameratusM. Hajós image
Pyrgodiscus kinkeri_('kinkerii')J. Pantocsek image
Pyrgodiscus simplexO. Witt image
Pyrgodiscus sinuatusH. Stradner image
Pyrgodiscus triangulatusM. Hajós & H. Stradner image