Table 2 in Three new Achnanthidium (Bacillariophyceae) species from Lake Salda (Anatolia, Turkey), a deep soda lake

Table 2. Comparison morphological characteristics of Achnanthidium anatolicum sp. nov. and morphologically similar taxa. Achnanthidium anatolicum sp. nov.Achnanthidium minutissimumAchnanthidium catenatumAchnanthidium lusitanicıumValve length (μm)11.5-23.08.8-17.410.0-17.55.3-13.0Valve width (μm)2.5-3.52.2-4.12.8-3.62.3-3.0Valve outlinelinearlinear-elliptic to linear-lanceolateslenderelliptic, linear-elliptic to linear-lanceolate, slightly inflated in the middle part of the valveValve apicessubcapitaterostrate to subcapitate protracted or as a rectangular fasciacapitate endings becoming subcapitate in smaller specimensrostrate, protractedStriation patternradiate, denser and more strongly radiate near the apicesradiate, more strongly radiate and denser near the apicesradiate in the central and weakly radiate or almost parallelradiate and almost equidistant, more radiate and denser towards the apicesRaphe valveCentral areasmall bordered by 3-4 widely spaced stria both sidesalmost absent, slightly rounded or as a rectangular fascia (more rarely)rounded, in smaller specimens almost absentinconspicuous to small roundedStriae (in 10 μm)26-2830 (up to 35 near the apices)30-3235 (up to 40 near the apices)Number of areolae (per striae)4 (5, rarely 2-3 at apices)3-4 (rarely 2)4-64-5Rapheless valveCentral areaalmost absentweakly elliptical and almost absentsmall lanceolate to rhomboidalabsent or small, ellipticalStriae (in 10 μm)27-2935 (up to 40 near apices)30-3430-35Number of areolae (per striae)4-5 (rarely 2, 3 at apices)3-53-4 (5-6)ReferenceThis studyNovais et al. (2015)Hlubikova et al. (2011)Novais et al. (2015)