From cf07b200e6e84dbc96af40d4ee6284d4e0acc623 Mon Sep 17 00:00:00 2001 From: ggserver Date: Wed, 25 Jun 2025 19:08:23 +0000 Subject: [PATCH] Add updates up until 2025-06-25 19:02:18 --- .../36/09DF36F8ECAA562C80062B02ACA36692.xml | 650 ++++++++++++++++++ .../8D/233C8D096BE25097A314A5F236BF6C22.xml | 426 ++++++++++++ .../2D/50A32D8078865F32AC92846E8B398F8E.xml | 222 +++--- .../2E/C92B2E999C1F5D70A6AC6EF828CC24C1.xml | 627 +++++++++++++++++ 4 files changed, 1814 insertions(+), 111 deletions(-) create mode 100644 data/09/DF/36/09DF36F8ECAA562C80062B02ACA36692.xml create mode 100644 data/23/3C/8D/233C8D096BE25097A314A5F236BF6C22.xml create mode 100644 data/C9/2B/2E/C92B2E999C1F5D70A6AC6EF828CC24C1.xml diff --git a/data/09/DF/36/09DF36F8ECAA562C80062B02ACA36692.xml b/data/09/DF/36/09DF36F8ECAA562C80062B02ACA36692.xml new file mode 100644 index 00000000000..2f9f180f1c4 --- /dev/null +++ b/data/09/DF/36/09DF36F8ECAA562C80062B02ACA36692.xml @@ -0,0 +1,650 @@ + + + +Four new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from the Karst region of Guizhou in China + + + +Author + +Li, Yun +https://orcid.org/0009-0005-1251-7941 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Lu, Lin-Xin +https://orcid.org/0009-0004-5919-2083 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Zhou, Hui-Wen +https://orcid.org/0009-0004-3926-4887 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Yu, Pan +0000-0001-7937-2381 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Kociolek, John Patrick +0000-0001-9824-7164 +School of Environment and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Pang, Wan-Ting +0000-0002-4231-4046 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Wang, Quan-Xi +0000-0002-0317-6613 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +You, Qing-Min +0000-0002-5538-8503 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + +text + + +PhytoKeys + + +2025 + +2025-06-25 + + +259 + + +81 +102 + + + +journal article +10.3897/phytokeys.259.150757 + + + + + +Planothidium pseudoreichardtii +Q-M. You, P. Yu & J. P. Kociolek + +sp. nov. + + + + +Figs 1 +, +2 + + + + + +Holotype +. + + + + +SHTU +! Slide +GZ 201510045 +, +holotype +illustrated in Fig. +1 C, J +. Diatom samples are housed in the Lab of + +Algae + +and Environment, College of Life Sciences, Shanghai Normal University, China. + + + + + + + + +Planothidium pseudoreichardtii + +sp. nov. +LM +; +A – H. +Rapheless valves; +I – P. +Raphe valves. “ = ” indicates the different valves of the same frustule. +Q. +SEM +external view of an entire rapheless valve. The white arrow points to a larger areola. +R. +SEM +internal view of an entire rapheless valve, showing a distinct sinus in the central area (white arrow). Scale bar as shown. Scale bars: 10 µm ( +A – P +). + + + + + + +Isotype +. + + + + +COLO +! Material +11111 +, Slides are housed in the Kociolek Collection, University of Colorado, Museum of Natural History Diatom Herbarium, Boulder, U. S. A. + + + + + +Type locality. + + +China +. +Xiaoqikong Scenic Area +, +Libo County +, +Guizhou Province +, + +25°15'36"N +, +107°45'16"E + +, altitude: + +780 m + +, collected by +Kociolek J. P. +& +Wang Q. X. +, on + +October 2, 2015 + +. + + + + +Description. + + +Light microscopy ( +LM +) (Fig. +1 A – P +). Valves elliptical with slightly constricted ends and rostrate extensions. Valve dimensions (n = 60): Length 11.5–19.0 µm, width 5.5–7.5 µm. Rapheless Valve (Fig. +1 A – H +): Axial area narrow, straight, linear. Central area features a U-shaped hyaline region widening towards the valve margin, on the opposite side, striae extend to the axial area. Striae radiate along the valve outline, +14–17 in +10 µm (measured opposite hyaline area). Raphe Valve (Fig. +1 I – P +): Axial area narrow, straight, linear. Central area rectangular to nearly circular, bordered by 3–4 shortened, asymmetrical striae on each side. Raphe branches straight. Striae radiate along the valve outline, +14–18 in +10 µm. + + +Scanning electron microscopy ( +SEM +) (Figs +1 Q, R +, +2 A, B +). Rapheless Valve (Fig. +1 Q, R +): Striae composed of 3–4 rows of circular areolae, the outer two rows larger than those near the center. Striae narrow to 2 rows towards the axial area and may expand to 3–4 rows near the valve margin, a larger areola marks the end of striae near the valve margin (Fig. +1 Q +, white arrow). The central and axial areas feature irregular, shallow, linear depression. Internally, areolae are covered. A clearly visible sinus is present on one side of the central area, forming a shallow circular depression (Fig. +1 R +, white arrow). Raphe Valve (Fig. +2 A, B +): Striae composed of 3–4 rows of circular areolae. Striae narrow towards one end near the axial area. The central area typically displays 2 to 3 shortened striae. Striae almost extend onto the valve margin. Raphe branches are straight, with proximal raphe endings expanding into pores, surrounded by shallow, drop-like depressions. Distal raphe ends are curved in the same direction, briefly extending onto the mantle. Internally, proximal raphe endings are slightly deflected to the opposite side, distal raphe endings terminate in a small helictoglossa. Central nodule is raised, with striae wider raised virgae and sunken between them, and areolae are individually covered. + + + + + + + +Planothidium pseudoreichardtii + +sp. nov. +SEM +; +A. +External view of an entire raphe valve. +B. +Internal view of an entire raphe valve, scale bar as shown. Scale bar as shown. + + + + + +Etymology. + + +The species was named for its outline being similar to + +P. reichardtii + +. + + + + +PhycoBank registration. + + +http://phycobank.org/105527 + + + + +Distribution and ecology. + + +This species has currently only been found at its type locality, where it was collected from rocks in a rapid stream (water temperature 18.0 ° C, elevation +780 m +). The species was observed in sample +GZ 201510041 +P (2.0 %), +GZ 201510045 +(2.5 %). In the type material ( +GZ 201510045 +), + +P. pseudoreichardtii + +was rare. The associated diatom flora included + +Navicula lundii +Reichardt + +(19.5 %), + +Achnanthidium delmontii +Pérès, le Cohu & Barthès + +(12.0 %), + +Planothidium rostratum +(Østrup) Lange-Bertalot + +(6.0 %), + +Platessa hustedtii +Lange-Bertalot + +(5.5 %), and + +Achnanthidium minutissimum +(Kützing) Czarnecki + +(5.0 %), and other taxa with lower abundance (less than 5 %) such as + +Navicula capitatoradiata +Germain + +, + +Achnanthidium rivulare +Potapova & Ponader + +, + +Staurosira construens +Ehrenberg + +, + +Punctastriata nyingchiensis +Luo & Wang + +, + +Cocconeis placentula +Ehrenberg + +, and + +Nitzschia palea +Smith. Additional + +ecological information is presented in Table +1 +. + + + + +Remarks. + + +Due to their similar valve outlines, + +Planothidium pseudoreichardtii + +sp. nov. +and + +Planothidium liboensis + +sp. nov. +were compared with several morphologically similar taxa, including + +Planothidium reichardtii +Lange-Bertalot & Werum + +, + +Planothidium rostratum +(Østrup) Lange-Bertalot + +and + +Planothidium xinguense +Morais, Wetzel & Bicudo + +(Table +2 +). However, + +P. pseudoreichardtii + +sp. nov. +can be easily distinguished from + +P. liboensis + +sp. nov. +because the former possesses a sinus, while the latter has a cavum on the center of the rapheless valve. Meanwhile, + +P. pseudoreichardtii + +can be differentiated from + +P. reichardtii + +by several distinct features: (1) in +LM +, the central area of the rapheless valve in + +P. pseudoreichardtii + +has a broader hyaline area outlined by 3–5 striae, whereas in + +P. reichardtii + +, the hyaline area is outlined by only 1–2 striae; (2) The striae on the rapheless valve of + +P. pseudoreichardtii + +consist of 3–4 rows of circular areolae, with the outermost two rows being larger than the central ones, whereas + +P. reichardtii + +has uniformly sized areolae in its striae; (3) the striae of + +P. pseudoreichardtii + +terminates at the valve margin with a distinctly enlarged areola, while + +P. reichardtii + +doesn’t have it. (4) irregular shallow slit-like depressions are present in the central and axial areas of the rapheless valve in + +P. pseudoreichardtii + +, whereas no depressions were observed on the rapheless valve of + +P. reichardtii + +. + + + + + + +Comparison of morphological characteristics of + +Planothidium pseudoreichardtii + +sp. nov. +& + +Planothidium liboensis + +sp. nov. +and closely related taxa. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
- + +Planothidium pseudoreichardtii + +sp. nov. + + +Planothidium reichardtii +Lange-Bertalot & Werum + + + +Planothidium liboensis + +sp. nov. + + +Planothidium rostratum +(Østrup) Lange-Bertalot + + + +Planothidium xinguense +Morais + +
ReferenceThis study +Werum and Lange-Bertalot 2004 +This study +Lange-Bertalot 1999 +; +Wetzel et al. 2019 + +Morais et al. 2020 +
Valve outlineEllipticalElliptical to linear-ellipticalEllipticalEllipticalElliptical, asymmetrical
ApicesRostrateSubrostrate to capitateRostrateShort to long rostrateShort to long rostrate
Length11.5–19.0 µm8–18 µm12–18 µm6.5–15.0 µm12–14 µm
Width5.5–7.5 µm4.0–6.5 µm5–7 µm4.0–6.5 µm6.7–8.2 µm
+Central area ( +RV +) +Rectangular to nearly circularNdRectangular to nearly circularRectangular to slightly roundIrregular, rectangular to slightly rounded
+Axial area ( +RV +) +Narrow linearlinearNarrow linearNarrow, linear, widening towards the central areaNarrow linear
+Striae ( +RV +) +14–18 / 10 µmNd14–17 / 10 µm12–16 / 10 µm12–14 µm
+Areolae composition of striae ( +RV +) +3–4 rows areolaeNd4–5 rows areolae3–4 rows areolae3–4 rows areolae
+Axial area ( +SV +) +Narrow, linear to lanceolatelinearNarrow linearNarrow, straight, linearNarrow, linear, expanded in the central area opposite to the cavum
+Additional structure ( +SV +) +SinusSinusCavumCavumCavum
+Striae ( +SV +) +14–17 / 10 µmNd15–16 / 10 µm12–14 / 10 µm12–14 µm
+Areolae composition of striae ( +SV +) +3–4 rows areolaeNd4–5 rows areolae3–4 rows areolae1–3 rows areolae
+ + +Note: “ Nd ” indicates no data available in the reference. + + + + \ No newline at end of file diff --git a/data/23/3C/8D/233C8D096BE25097A314A5F236BF6C22.xml b/data/23/3C/8D/233C8D096BE25097A314A5F236BF6C22.xml new file mode 100644 index 00000000000..102f404cb19 --- /dev/null +++ b/data/23/3C/8D/233C8D096BE25097A314A5F236BF6C22.xml @@ -0,0 +1,426 @@ + + + +Four new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from the Karst region of Guizhou in China + + + +Author + +Li, Yun +https://orcid.org/0009-0005-1251-7941 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Lu, Lin-Xin +https://orcid.org/0009-0004-5919-2083 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Zhou, Hui-Wen +https://orcid.org/0009-0004-3926-4887 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Yu, Pan +0000-0001-7937-2381 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Kociolek, John Patrick +0000-0001-9824-7164 +School of Environment and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Pang, Wan-Ting +0000-0002-4231-4046 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Wang, Quan-Xi +0000-0002-0317-6613 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +You, Qing-Min +0000-0002-5538-8503 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + +text + + +PhytoKeys + + +2025 + +2025-06-25 + + +259 + + +81 +102 + + + +journal article +10.3897/phytokeys.259.150757 + + + + + +Planothidium liboensis +Q-M. You, P. Yu & J. P. Kociolek + +sp. nov. + + + + +Figs 3 +, +4 + + + + + +Holotype +. + + + + +SHTU +! Slide +GZ 201510051 +, +holotype +illustrated in Fig. +3 F, N +. Diatom samples are housed in the Lab of + +Algae + +and Environment, College of Life Sciences, Shanghai Normal University, China. + + + + + + +Isotype +. + + + + +COLO +! Material +11117 +, Slides are housed in the Kociolek Collection, University of Colorado, Museum of Natural History Diatom Herbarium, Boulder, U. S. A. + + + + + +Type locality. + + +China +. Xiaoqikong Scenic Area, +Libo County +, +Guizhou Province +, + +25°15'36"N +, +107°45'16"E + +, altitude: + +780 m + +, collected by +Wang Q. X. +& +Kociolek J. P. +, on + +October 2, 2015 + +. + + + + +Description. + + +Light microscopy ( +LM +) (Fig. +3 A – P +). Valves elliptical with slightly constricted ends and rostrate extensions. Valve dimensions (n = 75): Length 12–18 µm, width 5–7 µm. Rapheless Valve ( +SV +) (Fig. +3 A – H +): Axial area narrow, straight, linear. Central area with a large, unilateral, horseshoe-shaped hyaline area containing a clearly visible cavum, on the opposite side, striae extend to the axial area. Striae radiate along the valve outline, +15–16 in +10 µm (measured opposite the cavum). Raphe Valve ( +RV +) (Fig. +3 I – P +): Axial area narrow, straight, and linear, widening slightly towards the central area. Central area irregular, rectangular to slightly rounded, bordered by 2–3 shortened, asymmetrical striae on each side. Raphe branches straight, with proximal raphe endings drop-like. Striae radiate along the valve outline, +14–17 in +10 µm. + + + + + + + +Planothidium liboensis + +sp. nov. +LM +; +A – H. +Rapheless valves; +I – P. +Raphe valves. “ = ” indicates the different valves of the same frustule. +Q. +SEM +external view of an entire rapheless valve, scale bar as shown. Scale bars: 10 µm ( +A – P +). + + + +Scanning electron microscopy ( +SEM +) (Figs +3 Q +, +4 A – C +). Rapheless Valve (Figs +3 Q +, +4 A +): Striae composed of 4 to 5 rows of circular areolae, typically parallel to each other. Near the central area, striae often narrow to 3 areolae adjacent to the axial area. Striae extend onto the valve margin, and no areolae exist on the mantle. The axial area and central area exhibit irregular depressions. The cavum opening is broad, striae are distinctly wider than the virgae and sunken between them, areolae are covered by individual hymenes. Raphe Valve (Fig. +4 B, C +): Striae composed of 4 to 5 rows of circular areolae, with some striae consisting of 3 areolae near the axial area and valve margin. Striae extend onto the valve margin, and no areolae exist on the mantle. The central area typically displays 2 to 3 shortened areolae. Raphe branches are straight, with proximal raphe endings expanding into pores, surrounded by shallow, drop-like depressions. Distal raphe ends are curved in the same direction, briefly extending onto the mantle. Internally, proximal raphe endings are slightly deflected to the opposite side, distal raphe endings terminate in a small helictoglossa. The central nodule is raised, striae are markedly wider than the virgae and sunken between them, and areolae are covered by individual hymenes. + + + + + + + +Planothidium liboensis + +sp. nov +SEM +; +A. +Internal view of an entire rapheless valve; +B. +External view of an entire raphe valve; +C. +Internal view of an entire raphe valve. Scale bar as shown. + + + + + +Etymology. + +The species was named for the type locality, Libo County. + + + +PhycoBank registration. + + +http://phycobank.org/105528 + + + + +Distribution and ecology. + + +This species has currently only been found at its type locality, where it was collected from rocks and floating debris in ponds, as well as from rocks beneath a waterfall (water temperature 18.0–19.5 ° C, elevation +629–780 m +). The species was observed in samples +GZ 201510045 +(1.0 %), +GZ 201510051 +(5.8 %), and +GZ 201510066 +(1.5 %). In the type material ( +GZ 201510051 +), + +P. liboensis + +exhibited a relatively high abundance. The associated diatom flora included + +Sellaphora +sp. + +(15.5 %), + +Planothidium rostratum + +(12.5 %), + +Fallacia +sp. + +(5.0 %), + +Achnanthidium minutissimum + +(5.0 %), + +Nitzschia palea + +(5.0 %), and other taxa with lower abundance (less than 5 %) such as + +Planothidium ellipticum +(Cleve) Round & Bukhtiyarova + +, + +Sellaphora rotunda +Wetzel, Ector, Van de Vijver, Compère & Mann + +, + +Achnanthidium +spp. + +, + +Punctastriata nyingchiensis + +, + +Staurosira construens + +, + +Cocconeis placentula + +, and + +Platessa hustedtii + +. Additional ecological information is presented in Table +1 +. + + + + +Remarks. + + +In +LM +, + +P. liboensis + +, + +P. rostratum + +, and + +P. xinguense + +exhibit broadly similar valve outlines, and all display a cavum. However, + +P. liboensis + +can be distinguished from other taxa by the following features: (1) + +P. liboensis + +has a denser arrangement of striae, typically consisting of 4–5 rows of similarly-sized round areolae, and the striae are distinctly wider than the virgae. In contrast, the striae of + +P. rostratum + +in the rapheless valve consist of 3–4 rows of areolae, where the two middle rows are smaller than the outer rows. The striae of + +P. xinguense + +in rapheless valve are composed of 1–3 rows of areolae; (2) The central area of rapheless valve in + +P. liboensis + +exhibits distinctive irregularly shaped shallow depressions, whereas + +P. rostratum + +features shallow, slit-like depressions. + +P. xinguense + +also exhibits irregularly shaped shallow depressions in the central area, but their shape differs from those in + +P. liboensis + +. Additionally, + +P. xinguense + +has slit-like depressions in the axial area; (3) compared to + +P. rostratum + +, the cavum of + +P. liboensis + +has a more open aperture; (4) compared to + +P. xinguense + +, + +P. liboensis + +exhibits weaker striae radiation and a narrower central area on the rapheless valve. + + + + \ No newline at end of file diff --git a/data/50/A3/2D/50A32D8078865F32AC92846E8B398F8E.xml b/data/50/A3/2D/50A32D8078865F32AC92846E8B398F8E.xml index 3d7df419d11..a6b13edd6f4 100644 --- a/data/50/A3/2D/50A32D8078865F32AC92846E8B398F8E.xml +++ b/data/50/A3/2D/50A32D8078865F32AC92846E8B398F8E.xml @@ -1,95 +1,95 @@ - - - -Four new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from the Karst region of Guizhou in China + + + +Four new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from the Karst region of Guizhou in China - - -Author + + +Author -Li, Yun -https://orcid.org/0009-0005-1251-7941 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Li, Yun +https://orcid.org/0009-0005-1251-7941 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Lu, Lin-Xin -https://orcid.org/0009-0004-5919-2083 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Lu, Lin-Xin +https://orcid.org/0009-0004-5919-2083 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Zhou, Hui-Wen -https://orcid.org/0009-0004-3926-4887 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Zhou, Hui-Wen +https://orcid.org/0009-0004-3926-4887 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Yu, Pan -0000-0001-7937-2381 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Yu, Pan +0000-0001-7937-2381 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Kociolek, John Patrick -0000-0001-9824-7164 -School of Environment and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China +Kociolek, John Patrick +0000-0001-9824-7164 +School of Environment and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Pang, Wan-Ting -0000-0002-4231-4046 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Pang, Wan-Ting +0000-0002-4231-4046 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -Wang, Quan-Xi -0000-0002-0317-6613 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +Wang, Quan-Xi +0000-0002-0317-6613 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China - - -Author + + +Author -You, Qing-Min -0000-0002-5538-8503 -College of Life Sciences, Shanghai Normal University, Shanghai 200234, China +You, Qing-Min +0000-0002-5538-8503 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China -text - - -PhytoKeys +text + + +PhytoKeys - -2025 - -2025-06-25 + +2025 + +2025-06-25 - -259 + +259 - -81 -102 + +81 +102 -journal article -10.3897/phytokeys.259.150757 +journal article +10.3897/phytokeys.259.150757 - + @@ -114,28 +114,19 @@ Q-M. You, P. Yu & J. P. Kociolek - + SHTU -! -Slide GZ -201510051, +! Slide +GZ 201510051 +, holotype illustrated in Fig. 5 F, N -. Diatom samples are housed in the - -Lab of +. Diatom samples are housed in the Lab of Algae - -and Environment, -College of Life Sciences -, -Shanghai -Normal University, -China -. +and Environment, College of Life Sciences, Shanghai Normal University, China. @@ -143,7 +134,7 @@ Normal University, - + Planothidium angustirostratum sp. nov. @@ -169,11 +160,12 @@ external view of an entire rapheless valve, scale bar as shown. Scale bars: 10 + COLO -! Material 11117, Slides are housed in the Kociolek Collection, University of -Colorado -, Museum of Natural History Diatom Herbarium, Boulder, -U. S. A. +! Material +11117 +, Slides are housed in the Kociolek Collection, University of Colorado, Museum of Natural History Diatom Herbarium, Boulder, U. S. A. + @@ -181,19 +173,33 @@ external view of an entire rapheless valve, scale bar as shown. Scale bars: 10 Type locality. + China -. Xiaoqikong Scenic Area, Libo County, +. +Xiaoqikong Scenic Area +, +Libo County +, Guizhou Province , -25 ° 15 ' 36 " N +25°15'36"N , -107 ° 45 ' 16 " E +107°45'16"E , altitude: -780 m -, collected by Wang Q. X. & Kociolek J. P., on -October 2, 2015 + +780 m + +, collected by +Wang Q. X. +& +Kociolek J. P. +, on + +October 2, 2015 + + . @@ -218,9 +224,7 @@ Light microscopy ( Scanning electron microscopy ( - -SEM - +SEM ) (Figs 5 Q , @@ -238,7 +242,7 @@ Scanning electron microscopy ( - + Planothidium angustirostratum sp. nov. @@ -272,16 +276,12 @@ Internal view of an entire raphe valve. Scale bar as shown. Distribution and ecology. -This species has currently only been found at its -type -locality, where it was collected from floating debris in a pond (water temperature 18.0 ° C, elevation +This species has currently only been found at its type locality, where it was collected from floating debris in a pond (water temperature 18.0 ° C, elevation 780 m ). The species was observed only in sample ( -GZ -201510051) at a low relative abundance (0.75 %). In the -type -material, - +GZ 201510051 +) at a low relative abundance (0.75 %). In the type material, + P. angustirostratum was rare. The associated diatom flora included @@ -294,7 +294,7 @@ sp. Planothidium rostratum (12.5 %), - + Planothidium liboensis (5.75 %), @@ -352,7 +352,7 @@ spp. Due to the broadly similar valve outline in LM and the presence of a cavum, - + Planothidium angustirostratum sp. nov. @@ -374,7 +374,7 @@ Lange-Bertalot & Bąk (Table 3 ). In addition to differences in striae density and valve length and width, - + Planothidium angustirostratum sp. nov. @@ -394,7 +394,7 @@ and Comparison of morphological characteristics of - + Planothidium angustirostratum sp. nov. @@ -407,7 +407,7 @@ and closely related taxa. - - + Planothidium angustirostratum sp. nov. diff --git a/data/C9/2B/2E/C92B2E999C1F5D70A6AC6EF828CC24C1.xml b/data/C9/2B/2E/C92B2E999C1F5D70A6AC6EF828CC24C1.xml new file mode 100644 index 00000000000..408c0b642b1 --- /dev/null +++ b/data/C9/2B/2E/C92B2E999C1F5D70A6AC6EF828CC24C1.xml @@ -0,0 +1,627 @@ + + + +Four new Planothidium species (Achnanthidiaceae, Bacillariophyceae) from the Karst region of Guizhou in China + + + +Author + +Li, Yun +https://orcid.org/0009-0005-1251-7941 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Lu, Lin-Xin +https://orcid.org/0009-0004-5919-2083 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Zhou, Hui-Wen +https://orcid.org/0009-0004-3926-4887 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Yu, Pan +0000-0001-7937-2381 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Kociolek, John Patrick +0000-0001-9824-7164 +School of Environment and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Pang, Wan-Ting +0000-0002-4231-4046 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +Wang, Quan-Xi +0000-0002-0317-6613 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + + + +Author + +You, Qing-Min +0000-0002-5538-8503 +College of Life Sciences, Shanghai Normal University, Shanghai 200234, China + +text + + +PhytoKeys + + +2025 + +2025-06-25 + + +259 + + +81 +102 + + + +journal article +10.3897/phytokeys.259.150757 + + + + + +Planothidium maolanensis +Q-M. You, P. Yu & J. P. Kociolek + +sp. nov. + + + + +Figs 7 +, +8 + + + + + +Holotype +. + + + + +SHTU +! Slide +GZ 201510099 +, +holotype +illustrated in Fig. +7 D, L +. Diatom samples are housed in the + +Lab of + +Algae + + +and Environment, +College of Life Sciences +, +Shanghai +Normal University, +China +. + + + + + + + + +Planothidium maolanensis + +sp. nov. +LM +; +A – H. +Rapheless valves; +I – P. +Raphe valves. “ = ” indicates the different valves of the same frustule. +Q. +SEM +external view of an entire rapheless valve, scale bar as shown. Scale bars: 10 µm ( +A – P +). + + + + + + +Isotype +. + + + + +COLO +! Material +11165 +, Slides are housed in the Kociolek Collection, University of Colorado, Museum of Natural History Diatom Herbarium, Boulder, U. S. A. + + + + + +Type locality. + + + +China +. +Maolan Nature Reserve +, +Libo County +, +Guizhou Province +, + +25°17'32"N +, +108°04'16"E + +, altitude: + +650 m + +, collected by +Kociolek J. P. +& +Wang Q. X. +, on + +October 4, 2015 + + +. + + + + +Description. + + +Light microscopy ( +LM +) (Fig. +7 A – P +). Valves elliptical, with rounded ends not extended. Valve dimensions (n = 50): Length 9.5–18.0 µm, width 5.5–7.5 µm. Rapheless Valve (Fig. +7 A – H +): Axial area linear-lanceolate, with central area slightly broadened. One side of the central area has two striae with widened spacing, opposite side striae slightly shortened. Striae weakly radiate along the valve outline, narrowing towards axial area, +10–12 in +10 µm (measured opposite hyaline area). Raphe Valve (Fig. +7 I – P +): Axial area linear-lanceolate, slightly widened in the central area. Central area subcircular, bordered by 2–3 slightly shortened striae on each side. One side of the central area has two striae with widened spacing. Striae radiate weakly, +10–12 in +10 µm. Raphe branches straight, occasionally slightly curved. + + +Scanning electron microscopy ( +SEM +) (Figs +7 Q +, +8 A – C +). Rapheless Valve (Figs +7 Q +, +8 A +): Striae composed of 4–5 rows of circular areolae, markedly narrow near the axial area, reducing to 2–3 rows of areolae, striae almost extend onto the valve margin, and some areolae exist on the mantle. Irregular depressions present on the axial area, central area and even on the virgae. Internally, areolae covered. Virgae widen gradually from the ends towards the center, with striae sunken between virgae, a distinctly wider virgae present on one side of the central area (Fig. +8 A +, White arrow). Raphe Valve (Fig. +8 B, C +): Striae composed of 5–6 rows of small circular areolae, markedly narrowing near the central area, reducing to 2–3 rows of areolae. striae don’t extend onto the valve margin, and some areolae exist on the mantle (Fig. +8 B +, White arrows). Raphe branches straight, occasionally slightly curved. Externally, proximal raphe endings expand into pores, distal raphe ends are curved in the same direction, and extend onto the mantle. Internally, proximal raphe endings slightly deflected to the opposite side, and distal raphe endings terminate in a small helictoglossa. Internally, areolae covered individually by membranes, striae sunken between virgae. + + + + + + + +Planothidium maolanensis + +sp. nov +SEM +; +A. +Internal view of an entire rapheless valve. The white arrow points to a distinctly wider virgae; +B. +External view of an entire raphe valve. White arrows indicate the areolae on the mantle. +C. +Internal view of an entire raphe valve. Scale bar as shown. + + + + + +Etymology. + +The species was named for the Maolan Nature Reserve, where the type specimen was collected. + + + +PhycoBank registration. + + +http://phycobank.org/105530 + + + + +Distribution and ecology. + + +This species has currently only been found at its type locality, where it was collected from rocks in a subsurface stream and in rapidly flowing river water (water temperature 18.0 ° C, elevation +650–811 m +). The species was observed in samples +GZ 201510099 +(3.75 %), +GZ 201510100 +(0.25 %), and +GZ 2015108 +(0.75 %). In the type material ( +GZ 201510099 +), + +P. maolanensis + +was rare. The associated diatom flora included + +Cocconeis placentula + +(23.0 %), + +Achnanthidium delmontii + +(7.5 %), + +Navicula lundii + +(7.5 %), + +Navicula antonii +Lange-Bertalot + +, + +Navicula +sp. + +(6.0 %), + +Achnanthidium minutissimum + +(5.5 %), and other taxa with lower abundance (less than 5 %) such as + +Platessa hustedtii + +, + +Achnanthidium +spp. + +, + +Encyonema hophense +Krammer + +, and + +Achnanthes prominula +Levkov & Tofilovska. Additional + +ecological information is presented in Table +1 +. + + + + +Remarks. + + +Due to the broadly similar valve outline in +LM +and the absence of cavum, + +Planothidium maolanensis + +sp. nov. +can be compared with + +P. hauckianum +(Grunow) Bukhtiyarova + +, + +P. kaetherobertianum +Van de Vijber & Bosak + +, and + +P. iberense +Rovira & Witkowski + +(Table +4 +). + +P. maolanensis + +can be easily distinguished from + +P. kaetherobertianum + +and + +P. iberense + +by valve outline and striae density, while it shows greater overall similarity to + +P. hauckianum + +. However, + +P. maolanensis + +can still be differentiated by the following features: (1) In + +P. maolanensis + +, only two striae on one side of the central area show slightly increased spacing, while the remaining striae are evenly arranged. In contrast, + +P. hauckianum + +has more striae with increased spacing on both sides of the central area. (2) The striae of + +P. maolanensis + +consist of 4–5 rows of circular areolae on rapheless valve and 5–6 rows on raphe valve. In + +P. hauckianum + +, the striae consist of 3–4 rows of circular areolae on the rapheless valve and 2–4 rows on the raphe valve. (3) Although the striae in + +P. maolanensis + +and + +P. hauckianum + +both generally narrow toward the axial area, the narrowing in + +P. maolanensis + +is not gradual or consistent. Sometimes, the middle of striae contracts, making it narrower than the ends near the axial area. (4) + +P. maolanensis + +has irregularly shaped shallow depressions in axial area and between the striae, while + +P. hauckianum + +exhibits slit-like depressions. + + + + + + +Comparison of morphological characteristics of + +Planothidium maolanensis + +sp. nov. +and closely related taxa. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
- + +Planothidium maolanensis + +sp. nov. + + +Planothidium hauckianum +(Grunow) Bukhtiyarova + + + +Planothidium kaetherobertianum +Van de Vijber & Bosak + + + +Planothidium iberense +Rovira & Witkowski + +
ReferenceThis study +Kulaš et al. 2020 + +Van De Vijver and Bosak 2019 + +Rovira et al. 2011 +
Valve outlineEllipticalLinear-lanceolate or elliptic-lanceolatelanceolate to elliptic-lanceolate in smaller valves with cuneately roundedElliptical-lanceolate
ApicesRounded ends not extendedVery weakly protracted, slightly rostrate to broadly rounded in smaller valvesOnly very weakly protracted apicesModerately produced, obtusely rounded
Length9.5–18.0 µm7–30 µm7–13 µm17–26 µm
Width5.5–7.5 µm4.5–7.0 µm4.0–4.5 µm6.5–9.5 µm
+Central area ( +RV +) +SubcircularAsymmetricalRounded to rectangularCircular
+Axial area ( +RV +) +Narrow linearNarrow, linearVery narrow, linearNarrow, linear
RapheStraight to slightly curvedStraight to weakly curvedStraightStraight
+Striae ( +RV +) +10–12 / 10 µm8–10 / 10 µm16–17 / 10 µm12–15 / 10 µm
+Areolae composition of striae ( +RV +) +5–6 rows areolae2–4 rows areolae2–3 rows areolae4 rows areolae
+Axial area ( +SV +) +Narrow linearNarrow linearLinear to narrowly lanceolateNarrow, linear
+Additional structure ( +SV +) +AbsentAbsentAbsentAbsent
+Striae ( +SV +) +10–12 / 10 µm7–11 / 10 µm15–16 / 10 µm14–16 / 10 µm
+Areolae composition of striae ( +SV +) +4–5 rows areolae3–4 rows areolae2 rows areolae3–4 rows areolae
+ + + + \ No newline at end of file