FIGURES 36–40 in Cocconeis pinnata W. Gregory ex Greville (Bacillariophyta): Lectotypification and an emended description after examination of type material and South Pacific specimens

FIGURES 36–40: Cocconeis pinnata from Tahiti Island (SEM). External views of the RV. Fig. 36: complete valve, with the RV valvocopula open at one apex (arrows). Fig. 37: detail of the areolae on apex, and distal raphe ending close to the margin. Fig. 38: central area restricted and central raphe endings opposed and close to each other. Fig. 39: detail of the arborescent volae closing the areolae (most often two per areolae). Fig. 40: relatively narrow cingulum with a supplementary cingular band/copula (arrow). SEM, scale bars: Fig. 36: 7 µm; Fig. 40: 3 µm; Fig. 38: 2 µm; Fig. 37: 1 µm; Fig. 39: 0.3 µm.