PLATE 9 in The diatom genus Hantzschia (Bacillariophyta) in Xinjiang Province, China

PLATE 9: Figures 54–57. Hantzschia vivacior. SEM micrographs. Fig. 54. Detail of the external central raphe endings and areolae. Fig. 55. Detail of the external distal raphe fissure. Fig. 56. Detail of the internal central raphe endings and areolae. Fig. 57. Internal view of valve terminus with helictoglossa evident. Scale bars=1 μm for all figures.