Cleve, P.T. (1895). Synopsis of the Naviculoid Diatoms, Part II. <em>Kongliga Svenska-Vetenskaps Akademiens Handlingar.</em> 27(3): 1-219, 4 pls. page(s): p. 86 [details]
(ofPinnularia acrosphaeria f. undulata (Cleve) Hustedt, 1930)Cleve-Euler, A. (Cleve) (1955). Die Diatomeen von Schweden und Finnland. Part IV. Biraphideae 2. Kongliga Svenska Vetenskaps-Akademiens Handligar, ser. 4,, 5(4): 1-232, figs 971-1306. page(s): p. 25; fig. 1022 c [details]
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2025). DiatomBase. Pinnularia acrosphaeria var. undulata Cleve, 1895. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=676104 on 2026-07-03
original descriptionCleve, P.T. (1895). Synopsis of the Naviculoid Diatoms, Part II. <em>Kongliga Svenska-Vetenskaps Akademiens Handlingar.</em> 27(3): 1-219, 4 pls. page(s): p. 86 [details]
original description(ofPinnularia acrosphaeria f. undulata (Cleve) Hustedt, 1930)Cleve-Euler, A. (Cleve) (1955). Die Diatomeen von Schweden und Finnland. Part IV. Biraphideae 2. Kongliga Svenska Vetenskaps-Akademiens Handligar, ser. 4,, 5(4): 1-232, figs 971-1306. page(s): p. 25; fig. 1022 c [details]