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

NameAuthorSourceCitationYear
PTERONCOLAR.W. Holmes & D.A. Croll image
Pteroncola carliniiG.O. Almandoz & M.E. Ferrario in Almandoz et al. Phycologia 53: 189, figs. 1-15 2014
Pteroncola hyalina(Kützing) Gusliakov in Gusliakov et al. Atlas of diatoms of benthos of the northwestern Black Sea: 28 1992
Pteroncola marinaR.W. Holmes & Croll image
PTERONCOLACEAEGusliakov in Gusliakov et al. Atlas of diatoms of benthos of the northwestern Black Sea: 27 1992