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

Geitleribactron crassumM. Gold-Morgan, G. Montejano, & J. Komárek Arch. Hydrobiol. Suppl. 117 (Algol. Stud. 83): 266, fig. 2: 1-8 1996
Geitleribactron crassumM. Gold-Morgan, G. Montejano, & J. Komarek image
Geitleribactron periphyticumKomarek image
Geitleribactron purpureumM. Cantonati & J. Komárek in Cantonati et al. Freshwater Science 33: 550, fig. 1A-K 2014
Geitleribactron subaequale(Geitler) Komarek image