Ctenophora hunanensis sp. nov., external view, SEM A normal frustule B, C two abnormal frustules D middle part, detail from A note the central area and sternum E, F details of the two apices of the valve shown in A note the complex cribrae, the external openings of the rimoportulae (one on each apex), and the ocellulimbi. Scale bars: 10 μm (A–C); 1 μm (D–F).

 
 
  Part of: Xiang D-Q, Yang R, Rioual P, Zheng Y, Liu B (2024) Ctenophora hunanensis sp. nov. (Bacillariophyta) from the Yongle River in Hunan Province, China. PhytoKeys 250: 181-191. https://doi.org/10.3897/phytokeys.250.140576