Planothidium heteromorphum (Grunow) Lange-Bert.

Planothidium heteromorphum (Grunow) Lange-Bert.

Planothidium heteromorphum (Grunow) Lange-Bert. in Iconogr. Diatomol. 6: 276. 1999

is new combination for Achnanthes heteromorpha Grunow