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Scatter plots of length of leaves and epidermal cells. (a) averages in individuals, (b) all measured leaves. ×, Najas minor; ○, N. oguraensis.
Source publication
Najas minor and N. oguraensis (Hydrocharitaceae) are annual submerged plants and are difficult to distinguish owing to their similarities. While the number of anther locules and the size of the leaf epidermal cells differ between the two species, the anther locules are often difficult to observe on herbarium specimens and the effectiveness of using...
Contexts in source publication
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... between the two species. No correlation was detected between leaf length and epidermal cell length in either species in the analyses based on average sized individuals (N. minor, r = 0.13, P = 0.62; N. oguraensis, r = 0.05, P = 0.83) and in all leaf sizes except in N. oguraensis (N. minor, r < 0.001, P = 0.99; N. oguraensis, r = 0.133, P = 0.03) (Fig. ...
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... of Najas minor and N. oguraensis can be distinguished. We often observed cell shrinkage in dried plants, probably due to insufficient pressure during the drying process. Therefore, selecting well-pressed leaves is important for easy identification. In addition, the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses ...
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... shrinkage in dried plants, probably due to insufficient pressure during the drying process. Therefore, selecting well-pressed leaves is important for easy identification. In addition, the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length ...
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... the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length rarely correlates with epidermal cell ...
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... (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length rarely correlates with epidermal cell ...
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... between the two species. No correlation was detected between leaf length and epidermal cell length in either species in the analyses based on average sized individuals (N. minor, r = 0.13, P = 0.62; N. oguraensis, r = 0.05, P = 0.83) and in all leaf sizes except in N. oguraensis (N. minor, r < 0.001, P = 0.99; N. oguraensis, r = 0.133, P = 0.03) (Fig. ...
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... of Najas minor and N. oguraensis can be distinguished. We often observed cell shrinkage in dried plants, probably due to insufficient pressure during the drying process. Therefore, selecting well-pressed leaves is important for easy identification. In addition, the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses ...
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... shrinkage in dried plants, probably due to insufficient pressure during the drying process. Therefore, selecting well-pressed leaves is important for easy identification. In addition, the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length ...
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... the longest cells in some populations of N. minor and N. oguraensis were similar (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length rarely correlates with epidermal cell ...
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... (Fig. 4b), but there was a clear difference between the averages of both species (Fig. 4a), making it important to observe several leaves for correct identification. Although epidermal cell length increased slightly with increasing leaf length in N. oguraensis (Fig. 4b), there was no correlation between leaf and cell length in other analyses (Fig. 4a, b). Therefore, in both species, our findings indicate that leaf length rarely correlates with epidermal cell ...
Citations
... mm long (in N. oguraensis 2.6-3.5 mm long) and, on average, two times smaller epidermal cells of the leaf and slightly smaller leaf sizes (6.5-35 mm long, 0.13-0.7 mm wide in N. minor and 7-43 mm long, 0.1-0.66 mm wide in N. oguraensis) (Triest, 1988;Midorikawa et al., 2020). N. minor is highly variable in leaf shape, especially in the length of the leaf teeth. ...
The article provides information about rare and newly described species for the flora of the Urals and adjacent territories, namely: Astragalus saphronovae Kulikov, Atraphaxis decipiens Jaub. et Spach., Carex amgunensis F. Schmidt, Galium densiflorum Ledeb., Jovibarba globifera (L.) J. Parn., Najas minor All., Potamogeton nodosus Poir., Pseudorchis albida (L.) Á. Löve et D. Löve, Salix myrsinites L., Veronica agrestis L. Essays include the information on the species ecology and short taxonomic notes.
... This species resembles N. oguraensis Miki., which is sometimes treated as a synonym (Ito et al 2017;Les et al 2015). However, these species can be clearly distinguished by the number of anther locules [one in N. minor ( Figure 3C) and four in N. oguraensis] and the epidermal cell length (50e120 mm in N. minor and >160 mm in N. oguraensis) (Midorikawa et al 2020;Miki 1935). ...
During a floristic survey of Khar-Us Lake and its associated wetlands in Khovd Province, we found seven species and two hybrid nothospecies that have not previously been recorded in Mongolia. These taxa were found in seven localities and included Hydrilla verticillata (L.f.) Royle, Najas flexilis (Willd.) Rostk. & W.L.E. Schmidt, N. minor All., and N. tenuissima (A.Braun ex Magnus) Magnus (Hydrocaritaceae); Potamogeton ×angustifolius J. Presl (Potamogetonaceae); Ceratophyllum platyacanthum Cham. subsp. oryzetorum (Kom.) Les (Ceratophyllaceae); Aldrovanda vesiculosa L. (Droseraceae); Veronica anagalloides Guss. (Plantaginaceae); and Utricularia ×japonica Makino (Lentibulariaceae). Two of these genera, Hydrilla Rich. and Aldrovanda L., were also newly recorded from Mongolia. The addition of these taxa to the present Mongolian flora list brings the numbers of registered taxa and genera to 3,200 and 686, respectively. The morphological characteristics, diagnostic features, and distribution of these taxa in Mongolia are described in this report.
