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.
| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Euastrum didelta var. capitatum | (A.M. Scott & Prescott) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 1 | 2021 |
| Euastrum didelta var. dideltoides | (Willi Krieger) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum f. africanum | O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum f. angustius | (Kurt Förster & Eckert) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 1 | 2021 |
| Euastrum neosinuosum f. dubium | O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 4, figs. 58, 59 | 2021 |
| Euastrum neosinuosum f. ellipticum | (Kurt Förster) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum f. elongatum | (Grönblad) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum f. oculus | (A.M. Scott & Prescott) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum f. robustum | O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 4 | 2021 |
| Euastrum neosinuosum f. subgangense | (Kurt Förster) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum var. africanum | (Woodhead & Tweed) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 1 | 2021 |
| Euastrum neosinuosum var. biscrobiculatum | (Bourrelly) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 1 | 2021 |
| Euastrum neosinuosum var. brasiliense | (A.M. Scott & Croasdale) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 1 | 2021 |
| Euastrum neosinuosum var. gemmulosum | (Maskell) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. germanicum | (Raciborski) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. goyazense | (Kurt Förster & Eckert) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. hakalukiense | (A.K.M.N. Islam & A.K.Y. Haroon) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. laticeps | (Bourrelly) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. novemtuberculatum | (Beck-Mannagetta) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. parallelum | (Willi Krieger) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 2 | 2021 |
| Euastrum neosinuosum var. parvum | (Hinode) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum var. scrobiculatum | (Lütkemüller) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum var. simplex | (Maskell) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |
| Euastrum neosinuosum var. subjenneri | (West & G.S. West) O.V. Anissimova & M.D. Guiry | Notulae algarum | 221: 3 | 2021 |