Table 2 in Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist

Table 2. Comparison of Pleurosigma simulacrum with other straight species. CharacterP. simulacrum aP. acus bP. intermediumP. patagonicumLength, µm110–133162–258167–233146–229Width, µm13–1412–2217–1817–23Transapical stria density in 10 µm21–2314 (20)2224–30*Oblique stria density in 10 µm18–2014 (17)21–2224–29 *Oblique striae angle, degrees60806360*Central raphe endingsnonoverlappingnonoverlappingnonoverlappingoverlappingCalcar slitabsentabsentpresentpresentHyaline central area Duplex areolae at apexabsent 2absent unknownpresent continuous rowabsent continuous row a Data from Lobban 2021; stria densities recounted (transapical published as 26) b Data from Mann 1925; Stidolph 2002 (in parentheses if different) * differing center vs apex