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
PERCIVALIABukry image
Percivalia fenestrata(T.R. Worsley) S.W. Wise, Jr. Initial Rep. Deep Sea Drilling Project 71: 508 1983
Percivalia fenestrata(Worsley) S.W. Wise, Jr. image
Percivalia imperfossaM. Black image
Percivalia pontilithaBukry image
Percivalia porosaBukry image