FIGURES 123–129 in Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China

FIGURES 123–129. Achnanthidium jiuzhaienis sp. nov. Shorter morphotype, SEM views of rapheless valve. 123. External view of an entire rapheless valve. 124. Internal view of an entire rapheless valve. 125–126. Raphe vestiges at the two apices of the same valve. 127. Detail of the central area on the external of the rapheless valve. 128. Raphe vestiges at the apices. 129. Detail of the central area on the internal of the rapheless valve. Scale bars 5 μm (123–124), 1 μm (125–129).