FIGURES 19–24 in The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution

FIGURES 19–24: Drepanotheca; FIGURES 25–27: Reproductions of diagrams Drepanotheca. LM, Figs 19–22, 23, 24, specimens from BM 77697 (Figs 19, 20, Drepanotheca bivittata), BM 77620 (Figs 23, 24, Drepanotheca macra), Fig. 22 = Schrader (1969: pl. 28, fig. 10); Fig. 25, reproduction of Kisseleviella carina Scheschukova-Poretskaya (1962: 207, figs 2 a–c); Fig. 26, reproduction from part of the diagram in Akiba &Yanagisawa (1985: 495, fig. 3); Fig. 27 after Witkowski et al. (2011: 384, fig. 18b–f, with permission). Scale bars = 10μm (except Fig. 22, which has the original scale bar on the reproduction).