Find research datasets worth reusing

FIGURES 30–34 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India

FIGURES 30–34. Hippodonta mudumalaiensis sp. nov., SEM from the type material (AHMA #1405), external views. 30, 31. Views of the entire valve. 32. Central area. 33, 34. Valve apices. Scale bars = 1 μm (Figs 30–34).

FIGURES 2–29 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India

FIGURES 2–29. Hippodonta mudumalaiensis sp. nov., LM (DIC) from the type material (AHMA #1752). 2–29. Showing the valve variability of the population. Fig. 22 represents the holotype. Scale bar = 10μm.

FIGURE 1 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India

FIGURE 1. Distribution of Hippodonta taxa reported from the Indian Subcontinent. The type location of Hippodonta mudumalaiensis sp. nov., marked by a star.

FIGURES 35–39 in A new species of Hippodonta Lange-Bertalot, Metzeltin & Witkowski (Bacillariophyceae, Naviculales) from the Western Ghats, India

FIGURES 35–39. Hippodonta mudumalaiensis sp. nov., SEM from the type material (AHMA #1405), internal views. 35, 36. Views of the entire valve. 37, 38. Inner central area. 39. view of valve apex end with helictoglossa. Scale bars = 1 μm (Figs 35–39).

FIGURES 33–36 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China

FIGURES 33–36. SEM images of sand from Longfengtou Beach. Figs 33, 35. Sand grains showing H. fujiannensis attached in grooves (arrows). Figs 34, 36. External girdle view of H. fujiannensis. Scale bars in Fig. 35 = 100 μm, Fig. 33 = 50 μm; Figs 34, 36 = 10 μm.

FIGURES 14–20 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China

FIGURES 14–20. SEM images of Hippodonta fujiannensis. Figs 14, 17, 18. External view of entire valve. Striae uniseriate throughout the valve face and mantle. On one valve side, one column of lineolae closest to the raphe is positioned perpendicular towards remaining lineolae of the striae. Figs 15, 19. Close up of valve apices. Terminal endings of raphe distinct, strongly pronounced, teardrop-shaped depressions, positioned before terminal area or weakly advancing into it, slightly curved towards one valve side. Figs 16, 20. Close up of the central area. Central endings of the raphe small, teardrop-shaped depressions; central endings are positioned close together. Central area dissymmetrical. Scale bars in Figs 14, 18 = 5 μm; Fig. 17 = 2 μm; Figs 15, 16, 19, 20 = 1 μm.

FIGURE 1 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China

FIGURE 1. Location of the sampling site on Haitan Island, Fujian Province, China. LFTB = Longfengtou Beach.

FIGURES 27–32 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China

FIGURES 27–32. SEM images of Hippodonta fujiannensis. Figs 27, 30. Internal view of entire valve. Striae positioned on shallow linear depressions; thus, valve face not flat. Figs 28, 31. Internal view, detail of valve apex. Linear raphe slits distally terminated by weak, crescent-shaped helictoglossae, weakly advancing into the terminal area. Terminal area strongly pronounced. One row of lineolae around the valve apex. Figs 29, 32. Internal view, detail of central area. Central endings of the raphe linear, closely positioned, and gradually disappearing. Semicircular to rectangular hyaline area clearly developed in central area. Lineolae covered by hymens. Scale bars in Figs 27, 30 = 5 μm; Figs 31, 32 = 2 μm; Figs 28, 29 = 1 μm.

FIGURES 21–26 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China

FIGURES 21–26. SEM images of Hippodonta fujiannensis. Figs 21, 24. External view of complete frustules showing broad, unornamented girdle. Fig. 25. External girdle view of entire valve. The edge of the valve has no ornamentation. Figs 22, 26. Detail of one apex in girdle view, showing one row of apical areolae and the hyaline area. Fig. 23. Detail of the central area in girdle view, showing the central raphe endings and the central nodule. Scale bars in Fig. 25 = 10 μm; Figs 21, 23 = 5 μm; Figs 22, 24, 26 = 1 μm.

FIGURES 393–442 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 393–442: LM micrographs. Figs 393–441. Hippodonta arkonensis. Fig. 404. Complete frustule in girdle view. Fig. 442. Hippodonta baicalorostrata. Scale bar = 10 µm.

FIGURES 276–307 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 276–307: LM micrographs. Figs 276–290. Hippodonta crassa (type material). Fig. 290. Complete frustule in girdle view. Figs 291–307. Hippodonta radiata (type material). Fig. 307. Complete frustule in girdle view. Scale bar = 10 µm.

FIGURES 272–275 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 272–275: SEM micrographs. Figs 272, 273. Hippodonta capitata. Fig. 272. External view of entire valve. Striae biseriate throughout. Terminal pores of raphe slightly deflected towards secondary valve side. Fig. 273. Internal view of entire valve. Striae composed of two or three lines of pores, positioned in quite broad depressions. Raphe sternum thickened towards central raphe endings. Helictoglossae positioned just before terminal area, not advancing into it. Figs 274, 275. External view of entire valves of Hippodonta hungarica. Striae biseriate throughout; lineolae quite small; terminal pores of raphe weakly deflected towards secondary valve side. Scale bars in Figs 272–275 = 5 µm.

FIGURES 166–218 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 166–218: LM micrographs. Figs 166–179. Hippodonta subrostrata (type material). Figs 180–191. Hippodonta rostratoides (type material). Figs 192–200. Hippodonta affinis (type material). Figs 201–212. Hippodonta exigua (type material). Figs 213–218. Hippodonta humboldtiana (type material). Scale bar = 10 µm.

FIGURES 64–68 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm.

FIGURES 102–165 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 102–165: LM micrographs. Figs 102–137. Hippodonta abunda (type material). Figs 138–155. Hippodonta microcostulata. Figs 156–165. Hippodonta media (type material). Scale bar = 10 µm.

FIGURES 226–271 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 226–271: LM micrographs. Figs 226–238. Hippodonta capitata. Figs 239–248. Hippodonta hungarica. Figs 249–271. Hippodonta linearis. Scale bar = 10 µm.

FIGURES 27–63 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 27–63: LM micrographs. Figs 27–44. Hippodonta latelanceolata (type material). Fig. 30. Complete frustule in girdle view. Figs 45–63. Hippodonta costulatiformis var. costulatiformis. Fig. 63. Complete frustule in girdle view. Scale bar = 10 µm.

FIGURES 219–225 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 219–225: SEM micrographs. Figs 219–222. Hippodonta abunda (type material). Fig. 219. External view of entire valve. Terminal pores of raphe are simple linear depressions. Fig. 220. External view of complete frustule showing broad, unornamented girdle. Fig. 221. Internal view of entire valve. Striae positioned in shallow depressions, helictoglossae in line with raphe slits. Fig. 222. Close-up of one half of valve, internal view. Lineolae covered by quite prominent elliptical volae. Fig. 223. Hippodonta rostratoides (type material). External view of entire valve. Lineolae quite prominent. Terminal pores of raphe slightly deflected towards one valve side. Fig. 224. Hippodonta affinis (type material). External view of entire valve. Lineolae narrow but long. Terminal pores of raphe simple linear. Fig. 225. Hippodonta exigua (type material). External view of entire valve. Lineolae weakly pronounced, short. Terminal pores of raphe slightly deflected towards one valve side. Scale bars in Figs 219, 223, 224 = 5 µm; Fig. 220 = 2 µm; Fig. 221 = 6 µm; Fig. 222 = 3 µm; Fig. 225 = 4 µm.

FIGURES 96–101 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 96–101: SEM micrographs. Figs 96, 97. Hippodonta costulatiformis var. densistriata (type material). Fig. 96. External view of complete frustule showing narrow hyaline area present on valve mantle and the unornamented girdle. Fig. 97. Internal view of entire valve; striae positioned in shallow ridge depressions; interstriae strongly pronounced; helictoglossae in line with raphe slits. Figs 98–101. Hippodonta naviculiformis (type material). Figs 98, 100. External view of entire valve. Terminal pores of raphe deflected towards one valve side. Fig. 99. Internal view of entire valve. Lineolae positioned in shallow elliptical depressions. Central raphe endings simple linear and distantly positioned. Fig. 101. External view of broken frustule showing girdle unornamented. Scale bars in Fig. 96 = 2 µm; Fig. 97 = 5 µm; Figs 98–101 = 2 µm.

FIGURES 365–392 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes

FIGURES 365–392: LM micrographs. Figs 365–372. Hippodonta pulchra (type material). Figs 366, 367. Images of same valve at different focus. Fig. 372. Complete frustule in girdle view. Figs 373–376. Hippodonta costuloides. Fig. 373. Image of broken initial cell. Figs 377–392. Hippodonta intermedia. Fig. 380. Complete frustule in girdle view. Scale bar = 10 µm.