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
URBANIAK, Jacek, & Michal COMBIK
2013 (online Jul 1)
Genetic and morphological data fail to differentiate Chara intermedia from C. baltica, or C. polyacantha and C. rudis from C. hispida
Eur. J. Phycol.
48(3): 253-259, 2 figs., 4 tables