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

Gomphonemopsis exigua(Kützing) Medlin image
Gomphonemopsis ligowskiiA.Y. Al-Handal & E.W. Thomas Diatom Research 33: 98, figs. 2-25 2018
Gomphonemopsis lindaeA. Witkowski, D. Metzeltin, & H. Lange-Bertalot apud D. Metzeltin & A. Witkowski in H. Lange-Bertalot (ed.) Iconographia diatomologica 4: 18, pl. 54: figs. 36, 39-41; pl. 77: figs. 8 [with ?], 9, 10 [misprinted 9-12 in expl. pl.]; pl. 79: fig. 3 [not cited in text]; pl. 92: figs. 3, 4 [not cited in text] 1996
Gomphonemopsis littoralis(Hendey) Medlin image
Gomphonemopsis novozelandicum(W.E. Booth) M.A. Harper in Harper et al. Phylum Ochrophyta ...: 262 2012
Gomphonemopsis obscura(Krasske) Lange-Bertalot in Lange-Bertalot et al. Icon. Diat. 3: 91 1996
Gomphonemopsis pseudexigua(Simonsen) Medlin image
Gomphonemopsis pseudexiguaL. Medlin in Medlin & Round Diatom Res. 1: 208 1986
Gomphonemopsis sieminskaeM. Krzywda, R. Gastineau, Ch. Zhou & A. Witkowski in Krzywda et al. Plant and Fungal Systematics 64: 19, fig. 2 2019