Analysis of the type material of Synedra deformis W. Sm. and Synedra vaucheriae var. deformis Grunow (Fragilariaceae, Bacillariophyta) Author De, Bart Van Meise Botanic Garden Meise, Research Department, Nieuwelaan 38, 1860 Meise and University of Antwerp, Department of Biology - Universiteitsplein 1, B- 2610 Wilrijk bart. vandevijver @ plantentuinmeise. be (corresponding Author Vijver Belgium) - ECOBE, (Belgium) author) Author Mertens, Adrienne Diatomella, IJkelaarstraat 3, 6611 KN Overasselt (The Netherlands) adrienne @ diatomella. nl adrienne@diatomella.nl Author Ector, Luc Luxembourg Institute of Science and Technology (LIST), Environmental Research & Innovation (ERIN) Department, 41 rue du Brill, L- 4422 Belvaux (Luxembourg) luc. ector @ list. lu ector@list.lu text Cryptogamie, Algologie 2020 2020-11-12 20 13 137 149 journal article 246877 10.5252/cryptogamie-algologie2020v41a13 7507be59-0500-4c8b-896e-f8ed575ffa37 1776-0992 7819101 Synedra deformis W.Sm. A Synopsis of the British Diatomaceae : 98 (1856). MATERIAL . — United Kingdom . Sussex, Lewes, P. Mill Pond; coll. date 8.III.1853 (Van Heurck diatom collection, Meise Botanic Garden, Belgium).