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Rhaphoneis amphiceros
caption Rhaphoneis amphiceros: See Hendey 1964, pl.26, figs 1-4, scale bar= 50 µm
Rhaphoneis amphiceros (Ehrenberg) Ehrenberg 1844.
Figure 16 (image on the right) A highly variable species, but the specimen shown here is a good match for Ross (1981, pl. 1, fig. 2) since it lacks the lateral expansion of the hyaline axial area near the apices, which is characteristic of Delphineas surirella.
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author Stuart R. Stidolph
copyright Creative Commons Attribution 3.0
observation details click here
image notes Material also deposited in Rijksherbarium Leiden, the Netherlands. Aliquot sample and slide also in collection Sterrenburg, Nr. 249
figure in reference 14-16
plate number 1
image sets   The Stuart Stidolph Diatom Atlas