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
ARCUATASIGMAG. Reid Diat. Monogr. 14: 89 2012
Arcuatasigma adduG. Reid Diat. Monogr. 14: 91, pl. 15 2012
Arcuatasigma arenicola_('arenicolum')C.S. Lobban in Lobban & Reid Phytotaxa 346: 171, figs. 7-18 2018
Arcuatasigma belizenseG. Reid in Lobban & Reid Phytotaxa 346: 173, figs. 19-28 2018
Arcuatasigma castracanense_('castracanensis')G. Reid Diat. Monogr. 14: 90, pl. 13: figs. 1-5 2012
Arcuatasigma challengeriense_('challengeriensis')(Castracane) G. Reid Diat. Monogr. 14: 90 2012
Arcuatasigma closterioides(Grunow) G. Reid Diat. Monogr. 14: 91 2012
Arcuatasigma marginaleC.S. Lobban in Lobban & Reid Phytotaxa 346: 170, figs. 1-6 2018
Arcuatasigma spathulatum(Ricard) C.S. Lobban & G. Reid Phytotaxa 346: 177 2018