The Pennate Diatoms

2e édit A.S.Atl Achnanthes Akad apical axis area very narrow areolae auxospore axial area Bacill broadly rounded Cell wall central area central nodule central pores Chamber ring Chromatophores Cleve Cocconeis Coll concave constricted convex delicate Diat diatoms differentiated Dipl Diploneis distinctly dorsal drawn out ends Ehrenberg elliptical elongated Eunotia Fragilaria fresh water genus girdle view Grun Grunow Habitat Heurck Hust Hustedt Illustrations intercalary bands keel puncta Kutz Kützing lanceolate Licmophora linear-lanceolate Longitudinal canals longitudinal ribs Mastogloia Mereschkowsky Micr middle line Navicula Occurrence and Distribution Original Pantocsek poroids protracted ends pseudoraphe puncta Rabenhorst Raphe straight Raphe valve Rapheless valve robust rows septa side slightly radial spec species Stauroneis strongly structure Syll Synedra Synonyms Tempère & Peragallo transapical ribs Transapical striae transverse fascia um wide V.H.Syn valve margin valve width Valves linear wavy weakly wedge-shaped widened µm long µm wide