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32 results for “Fragilaria”
Figs 83-90 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Figs 83-90. SEM micrographs of the type material of Fragilaria vaucheriae (Kütz.) J.B.Petersen. 83. Complete valve in external view. 84. Complete frustule in external view. 85–86. Frustule in girdle view. 87, 90. Detail of the apex in girdle view, with the girdle bands and fimbriae clearly visible (indicated by the arrows). 88–89. Detail of the apex in external view (arrow indicates the rimoportula). Scale bars = 2 µm.
Fig. 1 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Fig. 1. Geographic locations of the sampling sites where Fragilaria rinoi Almeida & C.Delgado sp. nov. was found. The type locality is represented by a black circle in the Vouga river basin followed south by river Mondego and Lis basins.
Figs 78-82 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Figs 78-82. Scanning electron microscope images of Fragilaria rinoi Almeida & C.Delgado sp. nov. from Mogofores (river Cértima, Vouga river basin), 21 Mar. 2012 (Holotype BM 101 794). 78. Complete valve in external view. 79–80. Complete valves in internal view. 81. Detail of an apex in external view, with the apical pore field and rimoportula. 82. Detail of an apex in internal view, with the rimoportula clearly visible. Scale bars: 78–80, 82 = 2 µm; 81 = 1 µm.
Fig. 91 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Fig. 91. Comparison of the type population of Fragilaria rinoi Almeida & C.Delgado sp. nov. with the type material of related taxa. Data fitted to 95% confidence ellipses. NMDS plot of Booksteintransformed valve outline pseudolandmark coordinates. Black: F. rinoi sp. nov. Red: F. candidagilae Almeida, C.Delgado, Novais & S.Blanco. Blue: F. capucina Desm. Pink: F. intermedia Grunow in Van Heurck. Olive green: F. microvaucheriae C.E.Wetzel & Ector. Purple: F. neointermedia Tuji & D.M.Williams. Green: F. perminuta (Grunow) Lange-Bert. Dark blue: F. recapitellata Lange-Bert. & Metzeltin. Sky blue: F. vaucheriae (Kütz.) J.B.Petersen.
Figs 3–77 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Figs 3–77. Light microscope images of Fragilaria rinoi Almeida & C.Delgado sp. nov. 3–62. Mogofores (Cértima river, Vouga river basin, 21 Mar. 2012) type material (BM 101 794; Fig. 9 is from the holotype). 63–72. Estarreja (Antuã river, Vouga river basin, 22 Mar. 2012). 73–77. Foz do Ceira (river Ceira, Mondego river basin, 20 Mar. 2012). Scale bar = 10 µm.
Fig. 92 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Fig. 92. Boxplot of measurements of different Fragilaria species. Variation in valve length (a), width (b) and striae in 10 μm (c) measured in the type populations. The boxes represent the 25–75% quartiles, the median is shown with a horizontal line inside the box, and minimum and maximum values are shown with short horizontal lines (whiskers). Outliers are plotted as individual points.
Fig. 2 in Fragilaria rinoi sp. nov. (Fragilariales, Fragilariophyceae) from periphytic river samples in Central Portugal
Fig. 2. Type material of Fragilaria vaucheriae deposited in the Natural History Museum of London (BM 78023, BM 78024).
Fig. 4. A in Description of an unrecorded diatom Fragilaria saxoplanctonica Lange-Bertalot & Ulrich (Bacillariophyceae) from Paldang Reservoir in Korea
Fig. 4. A phylogenetic tree of Fragilaria using the maximum likelihood (ML) method based on chloroplast rbcL sequences. The genus Fragilaria is highlighted in green color, and our species is specified in bold. Strains marked with asterisk (*) are taken from Kahlert et al. (2019). Coscinodiscophyceae members were used as an outgroup.
Fig. 2 in Description of an unrecorded diatom Fragilaria saxoplanctonica Lange-Bertalot & Ulrich (Bacillariophyceae) from Paldang Reservoir in Korea
Fig. 2. SEM micrographs of the Korean Fragilaria saxoplanctonica isolated from Paldang Reservoir. A, B: valve in external view displaying the outline and striae. C: external view of central area with ghost striae. D: the striae patterns. E, F: external view of valve ends. G: girdle view. The arrow shows the external view of rimoportula. Scale bar = 10 μm in A and B.
FIGURES 26–31 in Fragilaria odeloucaensis sp. nov. (Bacillariophyta, Fragilariaceae) a diatom from temporary streams in southern Portugal
FIGURES 26–31. SEM images of F. odeloucaensis sp. nov. from type material from Odelouca Stream southern Portugal. 26, 27. Internal views of two valves showing details of striation, narrow axial area and position of rimoportulae (white arrows). 28, 29. Internal view of apices of a single valve. Rimoportula is denoted by white arrow in 28. Notice raised costae and raised zigzag axial area, and depressed striae in 29. 30, 31. Collapsed frustule in side view (30) and detail of apex (31). Elements of cingulum are indicated by black arrows, blister-like depositions by wavy black arrows and volae in 31 by black arrow heads. Scale bars = 5 µm (Figs 26, 27, 30), 2 µm (Figs 28, 29), 3 µm (31).
FIGURE 1 in Fragilaria odeloucaensis sp. nov. (Bacillariophyta, Fragilariaceae) a diatom from temporary streams in southern Portugal
FIGURE 1. Location of type locality, Odelouca Stream, in southern Portugal. Black dot denotes the type locality: Odelouca Stream, Monchique Council, Algarve region. Open circle corresponds to St. Pedro stream in the Center Region of Portugal.
FIGURES 2–19 in Fragilaria odeloucaensis sp. nov. (Bacillariophyta, Fragilariaceae) a diatom from temporary streams in southern Portugal
FIGURES 2–19. LM images of F. odeloucaensis sp. nov. from the type (BR-4723) from Odelouca Stream southern Portugal. Figure 2 corresponds to the holotype, while figures 17–19 are girdle views of the new taxon. Scale bar = 10 µm.
FIGURES 1–19 in A new Fragilaria Lyngbye species (Fragilariaceae, Bacillariophyta) from a historic Grunow sample from the Attersee, Austria
FIGURES 1–19. Light micrographs of Fragilaria crocodylus Van de Vijver & C.E.Wetzel sp. nov. LM images taken from the holotype population (BR-4736, Grunow sample 2646, Attersee, Austria). 1. Frustule in girdle view. 2–19. LM views of the population arranged in decreasing length. Scale bar = 10 µm.
FIGURES 20–25 in A new Fragilaria Lyngbye species (Fragilariaceae, Bacillariophyta) from a historic Grunow sample from the Attersee, Austria
FIGURES 20–25. Scanning electron micrographs of Fragilaria crocodylus Van de Vijver & C.E.Wetzel sp. nov. SEM images taken from the holotype population (BR-4736, Grunow sample 2646, Attersee, Austria). 20. SEM external view of an entire valve. Note the continuous series of marginal spines running from apex to apex and the lack of rimoportula at one apex. 21. SEM girdle view of two valves connected to each other via the short, conical spines. 22. SEM side view of the valve apex showing mantle plaques, the apical pore field, five protruding conical spines at the apex and the depressed rimoportula. 23. SEM external view of a valve apex showing the rimoportula, the conical spines on their pit-like depressions and the uniseriate striae with the combination of rounded and slit-like areolae. 24. SEM external detail of the central area. Note the slit-like areolae terminating the striae at the sternum. 25. SEM internal detail of a valve apex with the large rimoportula. Scale bars = 10 μm (Figs 20–21), 1 μm (Figs 22–25).
FIGURES 1–10. Fragilaria pinnata var. subcapitata Frenguelli from the Calama diatomite type material. 1 in Fragilaria pinnata var. subcapitata Frenguelli, typification and current taxonomic status
FIGURES 1–10. Fragilaria pinnata var. subcapitata Frenguelli from the Calama diatomite type material. 1. Original drawing of Frenguelli (1930, p. 198, fig. 4). 2–10. Specimens from type population. Figs 2-7. LM. Specimens in valve view. Fig. 2. Lectotype. Figs 8–11. SEM. Specimens in external valve views. Figs 8–9. Whole frustules. Figs 10–11. Details of the apices, note the small pore field (arrow in Fig. 11) and spines with tips flattened and forked (arrowheads). Scale bars: 10 µm (Figs 2–7), 5 µm (Figs 8, 9), 1 µm (Figs 10, 11).
FIGURES 123–149 in Examination and comparison of Fragilaria candidagilae sp. nov. with type material of Fragilaria recapitellata, F. capucina, F. perminuta, F. intermedia and F. neointermedia (Fragilariales, Bacillariophyceae)
FIGURES 123–149. LM micrographs of the type materials. 123–131. Fragilaria intermedia (Grunow) Grunow from Tuji & Williams (2013); 132–149. Fragilaria neointermedia Tuji & Williams (2013) from type material Grunow (slide W-1901-0004076). Scale bar = 10 μm.
FIGURES 40–122 in Examination and comparison of Fragilaria candidagilae sp. nov. with type material of Fragilaria recapitellata, F. capucina, F. perminuta, F. intermedia and F. neointermedia (Fragilariales, Bacillariophyceae)
FIGURES 40–122. LM micrographs of the type materials. 40–75. Fragilaria recapitellata (Grunow) J.B. Petersen, individuals from Kützing's type material in packet 861, sheet 586 (slide – BM 101312); 76–107. Fragilaria perminuta, type material 2592 in Grunow's collection (slide W-2011-01898). 108–122. F. capucina Desmazières type material (slide BM! 81302). Scale bar = 10 μm.
FIGURES 34–39 in Examination and comparison of Fragilaria candidagilae sp. nov. with type material of Fragilaria recapitellata, F. capucina, F. perminuta, F. intermedia and F. neointermedia (Fragilariales, Bacillariophyceae)
FIGURES 34–39. SEM micrographs of Fragilaria candidagilae Almeida, C. Delgado, Novais & S. Blanco from Ribeira do Botão (Mondego basin), 13/02/2012. 34. Complete valve in external view with rimoportula on bottom apex. 35, 36. Complete valves in internal view with a rimoportula on bottom apex; 36. Arrow is pointing to open girdle band 37. Complete frustule in girdle view with arrow pointing to open girdle band. 38. Detail of the apex in external view, with the rimoportula clearly visible. 39. Detail of the apex of the frustule in external view, with the apical pore fields (APF). Scale bar = 10 μm..
FIGURES 2–33 in Examination and comparison of Fragilaria candidagilae sp. nov. with type material of Fragilaria recapitellata, F. capucina, F. perminuta, F. intermedia and F. neointermedia (Fragilariales, Bacillariophyceae)
FIGURES 2–33. LM micrographs of Fragilaria candidagilae sp. nov. Almeida, C. Delgado, Novais & S. Blanco. 2–19. Fragilaria candidagilae Almeida, C. Delgado, Novais & S. Blanco from Ribeira do Botão, (Mondego basin), 13/02/2012 (type population). 20–33. Fragilaria candidagilae sp. nov. Almeida, C. Delgado, Novais & S. Blanco from Brasfemes stream (Mondego basin), 13/02/2012. Scale bar = 10 μm.
FIGURE 1 in Examination and comparison of Fragilaria candidagilae sp. nov. with type material of Fragilaria recapitellata, F. capucina, F. perminuta, F. intermedia and F. neointermedia (Fragilariales, Bacillariophyceae)
FIGURE 1 Geographic localization of the sampling sites where Fragilaria candidagilae sp. nov. was found in Portugal. Type locality is represented with a black circle. ○ Douro basin, □ Mondego basin, ∆ Ribeiras do Algarve watersheds.
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