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
BERTHOLDIAF. Schmitz image
BERTHOLDIALagerheim Bot. Centralbl. 40: 380 1889
Bertholdia japonica(K. Okamura) S. Segawa image
Bertholdia neapolitana(G.D.W. Berthold) F. Schmitz image
Bertholdia orbicularis(Berthold) Lagerheim ex Hansgirg SitzBer. K. Böhm. Ges. Wiss., Math.-Naturw. Cl. 1891: 310 1891
Bertholdia orbicularis var. grandisHansgirg SitzBer. K. Böhm. Ges. Wiss., Math.-Naturw. Cl. 1891: 310 1891
Stigeoclonium bertholdianumHeering in Pascher, Süssw.-Fl. 6: 72, fig. 99 1914