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
Gomphonema brasilienseA. Grunow image
Gomphonema brasiliense f. obtusum_('obtusa')Manguin Ann. Géol. Service des Mines 18: 102, pl. IV: fig. 70 1949
Gomphonema brasiliense subsp. pacificumG. Moser, H. Lange-Bertalot & D. Metzeltin Insel der Endemiten: Geobotanisches Phänomen Neukaledonien (Bibliotheca Diatomologica 38): 185, pl. 50: figs. 1-6 1998
Gomphonema brasiliense var. acutum_('acuta')E.E. Manguin image
Gomphonema brasiliense var. demeraraeA. Grunow image
Gomphonema brasiliense var. fossile_('fossilis')J. Heribaud image
Gomphonema brasiliense var. rhombiforme_('rhombiformis')E.E. Manguin image
Gomphonema brasiliense var. subclavatum_('subclavata')E.E. Manguin image