Ardissoneopsis undosa (Grunow) Lobban & Ashworth comb. nov.

Synedra undosa Grunow 1867 Hedwigia 6: 4; and 1877 Monthly Microscopical Journal 18: p. 167, pl. 193, fig. 8a-c. Basionym.

Toxarium undosum (Grunow) De Toni 1892, Sylloge, p. 677. Synonym.

Registration.

Phycobank http://phycobank.org/103260.