FIGURES 45–50 in Staurosirella paranaensis sp. nov., a new epiphytic freshwater diatom (Bacillariophyceae) from the Paraná River floodplain, Brazil, South America

FIGURES 45–50. SEM. Staurosirella paranaensis sp. nov. from type material. 45–50. Internal view. 47. Virgae doubly flared, internally, axial area and virgae are raised leaving the striae in depressions. 48–50. Volae branched and originated from the sides of the areolae projected towards the valve interior. Scale bars are identified in the SEM images.