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
VAN DE VIJVER, Bart, Amelie JARLMAN, & Horst LANGE-BERTALOT
2010 (Aug 30)
Four new Navicula (Bacillariophyta) species from Swedish rivers
Cryptogamie: Algologie
31(3): 355-367, 59 figs., 1 appendix
incl. list of 70 taxa of Navicula s.s. from Sweden