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

Craticula cuspidata(Kützing) D.G. Mann in Round, Crawford, & Mann Diatoms: 666 1990
Craticula cuspidata(Kützing) Mann image
Craticula cuspidata var. gracilis(M. Peragallo) C. Seeligmann, N.I. Maidana, & M. Morales Bol. Soc. Argent. Bot. 43: 9 2008
Craticula cuspidata var. major(Meister) Czarnecki image
Craticula cuspidata var. major(Meister) D.B. Czarnecki J. Iowa Acad. Sci. 101: 96 1995
Craticula cuspidata var. media(Meister) M. Aboal in A. Witkowski (ed.), Diat. Monogr. 4: 222 2003