Navicula obsita Hust. Navicula obsita Hust. in Arch. Hydrobiol. 40(4): 921, pl. 41, fig. 2. 1945is basionym for Pulchellophycus obsitus (Hust.) Edlund & M.J.Wynne in Notul. Algarum 100: 2. 24 Apr 2019Lectotype (designated by Simonsen, R. 19871): Croatia "Plitvicer Seen. 16" (BRM: N5/78)1. Simonsen, R. 1987: Atlas and Catalogue of the Diatom Types of F. Hustedt 1: [i]-x, [1]-525 Registration: http://phycobank.org/101477, 2019-04-24