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
NAGUMO, Tamotsu
2003
Taxonomic studies of the subgenus Amphora Cleve of the genus Amphora (Bacillariophyceae) in Japan
Bibliotheca Diatomologica
49: 3-265, 106 pls., [1] table