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
Cylindrospermum macrospermum f. pachydermaticaRabenhorst image
Cylindrospermum macrospermumKützing image
Cylindrospermum macrospermumKützing ex Frank image
Cylindrospermum macrospermum var. locarnenseDald. image
Hormoceras macrospermumReinsch image
MACROSPERMUMJ. Komárek Fottea 8: 81 2008
Macrospermum fuellebornii(Schmidle) J. Komárek Fottea 8: 82 2008
Macrospermum mysorense(Gonzalves & Kamat) J. Komárek Fottea 8: 82 2008
Macrospermum unisporum(N.L. Gardner) J. Komárek Fottea 8: 82 2008
Macrospermum volzii(Lemmermann) J. Komárek Fottea 8: 82 2008
Mycothamnion macrospermumKützing image
Oedogonium macrospermum f. patagonicumHirn & Borge image
Oedogonium macrospermum f. robustum_('robusta')Gauthier-Lièvre image
Oedogonium macrospermumWest & West image