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

Nitzschia hybrida f. hyalinaProschkina-Lavrenko image
Nitzschia hybridaGrunow image
Nitzschia hybrida var. gaspesianaM. Poulin, C. Hudon, & A. Cardinal Naturaliste Canad. 109: 280, figs. 1c, 7, 8 1982
Nitzschia hybrida var. kryokonitesCleve image
Nitzschia hybrida var. pellucidaGrunow image
Nitzschia hybridaeformisHustedt image
Nitzschia hybridaeformis var. pannuceaGiffen image