ТABLE 1. Morphometrical comparison of the structure of Chrysosphaerella stomatocysts based on this study and references. in Redescription of Chrysosphaerella baikalensis (Chrysophyceae, Chromulinales) with new data on the ultrastructure of its stomatocysts

ТABLE 1. Morphometrical comparison of the structure of Chrysosphaerella stomatocysts based on this study and references.
SEM descriptionStomatocyst 15, Duff & Smoll 1988 (Duff et al. 1995)Stomatocyst 42, Duff & Smoll 1989 (Duff et al. 1995)Stomatocyst 49, Duff & Smoll 1991 (Duff et al. 1995)Stomatocyst 120, Duff & Smoll 1992 (Duff et al. 1995)Stomatocyst 507, Forma B, this paperBiological affinityC. brevispinaImmature cyst of C. longispinaC. longispinaImmature cyst of C. longispinaC. baikalensisCyst shapeSphericalSpherical or slightly oblateSpherical or slightly oblateSphericalSpherical or slightly oblateCyst diameter or diameter × height, µm≥ 99.0–19.06.8–10.26.0–8.910.8–13.5 12.5–13.5 × 10.8–12.2Pore diameter, µmPore is regular, diameter 1.0Concave pore, inner diameter 0.3–2.1Concave pore, outer diameter 1.1–2.0, inner diameter 0.4–0.8Concave pore, inner diameter 0.5–0.9Regular pore, diameter 0.2–0.3OrnamentationSmooth or psilate (if immature of eroded)SmoothSmoothSmooth or psilate surfaceSmooth or psilate surfacePseudoannulusNot availableNot availableSwollen pseudoannulus that appears planar in apical viewNot availablePlanar pseudoanulus 0.1–0.4 widePore diameter: cyst diameter ratio, µm0.1–0.130.04