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.
Bibliographia Phycologica Universalis
WITKOWSKI, Andrzej, & Horst LANGE-BERTALOT
1993
Established and new diatom taxa related to Fragilaria schulzii Brockmann
Limnologica
23(1): 59-70, 6 figs.