Fig. 1
L. repanda n. sp., frustules (a, b) and valves, LM (a–e) and SEM (f–l). a Live cell in valve view. b Detail of plastids. c–e Holotype. c–d Enlargements of apex and base showing areola pattern. e Entire valve showing foot pole rimoportula and wave. f Entire external view of valve in SEM. g, h Details of (f) showing wave (g) and basal pole (h) with rimoportula opening (indicated by arrow), to the right of the midrib, and multiscissura. i Internal view of basal pole with rimoportula. j External view of apex showing areolae. k Detail of internal apex showing rimoportula. l Girdle view showing the valvocopula (VC) and four pleurae (1 through 4) and the position of the VC midrib near the abvalvar margin (arrow). Note the broadening of the abvalvar side into a broad ligule (arrowhead). Scale bars: a–e, g, 10 μm, f, 20 μm, h, j, l, 5 μm, i, 4 μm, k, 3 μm