| Name | Author | Source | Citation | Year |
|---|
| Apicoporus haificus ('haificum') | M.A. Krakhmalnyi & A.R. Krakhmalnyi | Phytotaxa | 404: 289 | 2019 |
| Asterosiphon dichotomus | (Kützing) V.S. Vishnyakov | Phytotaxa | 404: 298 | 2019 |
| Fragilaria spinaspeciosa | H. Lange-Bertalot & M. Cantonati in Cantonati et al. | Phytotaxa | 404: 262, figs. 1-13, 69-75 | 2019 |
| Fragilaria tridentina | M. Cantonati & H. Lange-Bertalot in Cantonati et al. | Phytotaxa | 404: 268, figs. 14-35, 76-81 | 2019 |
| Fragilaria vaucheriaeraetica | M. Cantonati & H. Lange-Bertalot in Cantonati et al. | Phytotaxa | 404: 269, figs. 36-68, 82-85 | 2019 |
| Geissleria cascadensis | (H.E. Sovereign) R. Stancheva & S.A. Spaulding | Notulae algarum | 103: 1 | 2019 |
| Navicula metareichardtiana | Lange-Bertalot & Kusber | Notulae algarum | 102: 1 | 2019 |
| Navicula teletskoyensis | D.A. Chudaev | Phytotaxa | 404: 164, figs. 1-24 | 2019 |
| Protonema dichotomum | Kützing | Natuurk. Verh. Holland. Maatsch. Wet. Haarlem, ser. 2, | 1: 60, 61, 62, pl. O: p.p. | 1841 |