FIGURES 1–6. Haslea wawrikae, type material. 1, 2 in A type study and emended description of Haslea wawrikae (Bacillariophyta)

FIGURES 1–6. Haslea wawrikae, type material. 1, 2. Lectotype, LM. 1. Apex. 2. Centre. 3–6. SEM, exterior views. Centre of valve. Arrow and inset (2× enlargement) show central raphe fissures. 4. View about midway to apex. Lines drawn through saepes (which "shine through") mark offset striae. 5. Apex. Raphe termination slightly dilated and curved, outermost two striae fuse and end in "spur". 6. Hairlike extension of valve. Scale bars: 20 μm (Fig. 1), 10 μ (Fig. 2), 5 μm (Fig. 6), 1 μm (Figs 3–5).