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
WILLIAMS, David M., Bing LIU, & Lukas TAXBÖCK
2022 (Feb. 28) Pinnularia hustedtii (Bacillariophyta): notes on specimens from Wuling Mountains, China and from type material
536(3): 294-300, 24 figs., 1 table