Silva Center for Phycological Documentation: Index Nominum Algarum

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.
A working list of algal type specimens at UC is available here

Results from INA database

Psammodiscus calceatusTsuy. Watanabe, T. Nagumo & Ji. Tanaka in Watanabe et al. Phytotaxa 124: 5, figs. 19-52 2013
Psammodiscus praenitidus(J. Fenner) J. Witkowski Beih. Nova Hedwigia 152: 254 2022
PSAMMODISCUSRound & D.G. Mann Ann. Bot. ser. 2, 46: 371 1980
Psammodiscus nitidus(Gregory) Round & D.G. Mann Ann. Bot. ser. 2, 46: 371 1980