Diploneis ovalis subsp. arctica Lange-Bert.

Diploneis ovalis subsp. arctica Lange-Bert.

Diploneis ovalis subsp. arctica Lange-Bert. in Iconogr. Diatomol. 6: 42. 1999

Holotype: Insula parva Mestnyi in oceano arctico haud procul ab paeninsula Yugorsky, Siberia boreo occidentalis in aqua dulci rivi, 8 Sep 1995, N.V. Vekhov (FR: Praep. RUS-26)