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

Campylodiscus clypeus(C.G. Ehrenberg) C.G. Ehrenberg image
Campylodiscus clypeus(Ehrenberg) Ehrenberg ex Kützing Kieselschal. Bacill.: 59 1844
Campylodiscus clypeus(Ehrenberg) Ehrenberg Ber. Königl. Akad. Wiss. Berlin 1838: 176 1839
Campylodiscus clypeusC.G. Ehrenberg image
Campylodiscus clypeus f. minor(J. Pantocsek) J. Frenguelli image
Campylodiscus clypeus f. minorS.P. Petkoff image
Campylodiscus clypeus var. bicostatus_('bicostata')(W. Smith ex F.C.S. Roper) F. Hustedt image
Campylodiscus clypeus var. dentatusF.W. Mills image
Campylodiscus clypeus var. minorB. Liebetanz image
Campylodiscus clypeus var. minorJ. Pantocsek image