FIGURES 27–32 in Systematics of araphid diatoms with asymmetric rimoportulae or densely packed virgae, with particular attention to Hyalosynedra (Ulnariaceae, Bacillariophyta)

FIGURES 27–32. Hyalosynedra al-turkii from culture UTKSA 0076. 27. Differential interference contrast LM of entire valve. 28. SEM exterior of entire valve. 29. SEM of apex of specimen with very weakly sunken ocellulimbus. 30. SEM of specimen with more deeply sunken ocellulimbus. 31. SEM interior of entire valve. 32. SEM interior detail of apex.