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

Spirulina jenneri(Hassall) Kützing image
Spirulina jenneri(Stizenberger ex Gomont) Engler image
Spirulina jenneri var. platensisNordstedt in Wittrock & Nordstedt Alg. Aq. Dulc. Exsicc. no. 679 (fasc. 14) 1884
Spirulina jenneri var. subrectaRabenhorst Fl. Eur. Alg. 2: 90 1865
Spirulina jenneri var. tenuiorHansgirg Prodr. Algenfl. Böhmen 2: 121 1892
Spirulina jenneri var. vaginataRabenhorst Fl. Eur. Alg. 2: 90 1865