FIGURES 54–58. Divergita capillaris from Grunow 839. 54 in Systematics of araphid diatoms with asymmetric rimoportulae or densely packed virgae, with particular attention to Hyalosynedra (Ulnariaceae, Bacillariophyta)

FIGURES 54–58. Divergita capillaris from Grunow 839. 54. LM of whole strongly curved valve from mica. 55. LM of whole strongly curved valve from Naphrax preparation. 56. SEM of broken weakly curved valve (interior view). 57. SEM detail of interior of apex of valve of 56. 58. SEM detail of central area, internal view, of valve of 56.