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
LANGE-BERTALOT, Horst
2001 Navicula sensu stricto[;] 10 genera separated from Navicula sensu lato[;] Frustulia In Lange-Bertalot, H. (ed.), Diatoms of Europe
Vol. 2. 526 pp., incl. 140 pls.