Fig. 2From: Geographical range expansion of Nitzschia volvendirostrata Ashworth, Dąbek & Witkowski, 2016 (Bacillariophyta: Bacillariaceae) based on morphological and molecular analysisNitzschia volvendirostrata. a Cleaned specimens, b Live cell showing plastids, c Internal view of the valve, d External and internal view of the valve (vertical) and frustule (horizontal). a–b scale line = 10 μm, c–d scale line = 5 μmBack to article page