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
XAVIER, Miriam Borges
1990 (May 22) ('1989').
O gênero Phacus Dujardin de lagos do Parque Estadual das Fontes do Ipiranga, São Paulo, Brasil.
Hoehnea
16: 149-164, 71 figs.
9 taxa of Phacus from São Paulo, Brazil described and illustrated; PgE