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35 results for “Hippodonta”
FIGURES 308–364 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 308–364: LM micrographs. Figs 308–328. Hippodonta avittatiformis (type material). Figs 327, 328. Images of complete frustules in girdle view. Figs 329–342. Hippodonta angustata (type material). Figs 343–349. Hippodonta cocquytiae (type material). Figs 350–353. Hippodonta conspicua (type material). Figs 354–364. Hippodonta minuta (type material). Fig. 354. Complete frustule in girdle view. Scale bar = 10 µm.
FIGURES 547–555 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 547–555: SEM micrographs. Figs 547, 548. Hippodonta subelegans. Fig. 547. External view of entire valve. Terminal pores of raphe are simple linear. Fig. 548. Detail of central area. Lineolae quite narrow and long, bone-shaped. Figs 549, 550. Hippodonta acuta (type material). Fig. 549. Internal valve view. Linear raphe slit distally terminated by semi-elliptical helictoglossa, positioned just before terminal area. Fig. 550. Detail of internal mid-valve. Striae positioned in prominent depressions. Lineolae covered by prominent, broadly elliptical volae. Figs 551–554. Hippodonta microcostulata. Fig. 551. External view of entire valve. Terminal pores of raphe distinct, advancing strongly into terminal area. Figs 552, 554. External view of two complete frustules, showing girdle unornamented. Fig. 553. Detail of mid-valve in fig. 552. Lineolae prominent and elliptical, longer near raphe and shorter towards valve mantle. Fig. 555. Hippodonta communis (type material). External view of complete frustule. Lineolae prominent and long, simple linear. Girdle quite broad and unornamented. Scale bars in Figs 547, 549, 554 = 5 µm; Figs 548, 550, 553 = 1 µm; Figs 551, 552 = 2 µm; Fig. 555 = 10 µm.
FIGURES 499–546 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 499–546: LM micrographs. Figs 499–519. Hippodonta microcostulata. Figs 520–525. Hippodonta kornevae. Fig. 525. Complete frustule in girdle view. Figs 526–534. Hippodonta certa (type material). Fig. 533. Complete frustule in girdle view. Figs 535–543. Hippodonta communis (type material). Figs 544–546. Hippodonta acus. Scale bar = 10 µm.
FIGURES 443–498 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 443–498: LM micrographs. Figs 443–469. Hippodonta subelegans. Figs 470–481. Hippodonta acuta (type material). Figs 482–498. Hippodonta microcostulata. Scale bar = 10 µm.
FIGURE 42 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 42. Ordination plots representing the first two axes of the Canonical Variates Analysis (CVA) performed on the normalized coordinates of the morphological landmarks digitized on LM images of Hippodonta qinghainensis and other species of Hippodonta.
FIGURES 38–40 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 38–40. Boxplots showing quantile distributions of valves characters for Hippodonta qinghainensis 38. Valve length. 39. Valve width. 40. Stria density (= number of striae in 10 µm). The 25–75 percent quartiles (excluding outliers) are drawn using a box. The median is shown with a horizontal line inside the box. The whiskers represent the upper and lower "inner fence", i.e. are drawn from the edge of the box up to the largest/lowest data point less than 1.5 times the box height. Outliers, i.e. values outside the inner fences, are shown as circles if they lie further from the edge of the box than 3 times the box height.
FIGURES 34–37 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 34–37. SEM images of Hippodonta qinghainensis. Figs 34, 35. Internal view of entire valves of different size. Striae composed of simple lineolae, positioned in quite shallow and narrow depressions; interstriae strongly pronounced. Some lineolae are still covered by volae. Raphe-sternum thickened towards central raphe endings. Fig. 36. Internal view, detail of apex. Linear raphe slit distally terminated by crescent-shaped helictoglossa, positioned just below terminal area. Fig. 37. Internal, oblique view showing two rows of lineolae around the valve apex. Scale bars in Fig. 34 = 3 µm; Fig. 35, 37 = 2 µm; Fig. 36 = 1 µm.
FIGURES 28–33 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 28–33. SEM images of Hippodonta qinghainensis. Fig. 28. External view of entire valve. Striae composed of simple lineolae throughout. Figs 29, 31. Close-up of apices. Terminal pores of raphe are weakly deflected towards one valve side. Two rows of apical areolae at the valve apices. Fig. 30. Close-up of central area. External central raphe endings weakly developed, teardrop-shaped depressions. Fig. 32. External view of complete frustules showing broad, unornamented girdle. Fig. 33. Detail of one apex in girdle view, showing two rows of apical areolae. Scale bars in Figs 28, 32, 33 = 2 µm; Figs 29, 30, 31 = 1 µm.
FIGURE 2 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 2. Positions of the 20 landmarks, with fixed landmarks represented by filled circles and sliding landmarks represented by empty circles. Average valve shapes (= consensus) of the newly described species, Hippodonta qinghainensis, and of the other Hippodonta species compared in the text.
FIGURE 41 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 41. Classification tree model, fitted using binary recursive partitioning, that shows splits used to separate the six species of Hippodonta on the basis of the three conventional variables: valve length, valve width and stria density.
FIGURES 2–13 in Hippodonta fujiannensis sp. nov. (Bacillariophyceae), a new epipsammic diatom from the low intertidal zone, Fujian Province, China
FIGURES 2–13. LM images of Hippodonta fujiannensis. Fig. 8. Holotype. Scale bar = 10 μm.
FIGURES 1–26 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 1–26: LM micrographs of Hippodonta lueneburgensis. Scale bar = 10 µm.
FIGURES 3–27 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURES 3–27. LM images of Hippodonta qinghainensis. Scale bar = 10 µm.
FIGURE 1 in Morphology and ultrastructure of Hippodonta qinghainensis sp. nov. (Bacillariophyceae), a new diatom from Lake Qinghai, China
FIGURE 1. Geographical location of the sampling sites in Lake Qinghai.
FIGURES 69–95 in Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes
FIGURES 69–95: LM micrographs. Figs 69–83. Hippodonta costulatiformis var. densistriata (type material). Figs 82, 83. Images of complete frustule in girdle view. Figs 84–95. Hippodonta naviculiformis (type material). Scale bar = 10 µm.
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