Achnanthes rosenstockii Lange-Bert. Achnanthes rosenstockii Lange-Bert. in Achnanthes. Biblioth. Diatomol., 18: 131, 132, pl. 61, fig. 1-17; pl 63, fig. 1-2. 1989is basionym for Psammothidium rosenstockii (Lange-Bert.) Lange-Bert. in Iconogr. Diatomol. 6: 280. 199911. (Basionym:) fig. 61: 1-17