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
VESELÁ, Jana, Jeffrey R. JOHANSEN, & Marina POTAPOVA
2013 (online Oct. 29) Surirella terryi and S. cruciata: two rare diatoms from North America
Diatom Research
28(4): 503-516, 65 figs., 1 table