Achnantheiopsis borneolanceolata Lange-Bert.

Achnantheiopsis borneolanceolata Lange-Bert.

Achnantheiopsis borneolanceolata Lange-Bert. in Arch. Protistenk. 148: 208. 1997

is basionym for Planothidium borneolanceolatum (Lange-Bert.) Lange-Bert. in Iconogr. Diatomol. 6: 275. 1999