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, & Ditmar METZELTIN
2014 (July 14) Pinnularia saprotolerans proposed as a species new to science from rivers in Central Europe and South Africa tolerating strongly polluted waters
78: 115-120, 18 figs.