PLATE 24Fig.PageNAVICULA1Navicula maculata (Bail.) Cl.[90]2Navicula prætexta Ehr.[92]3Navicula latissima Greg.[90]4Navicula irrorata Grev.[93]5Navicula latissima var. elongata (Pant.) Cl.[91]6Navicula fuchsii Pant.[91]Fig.PageNAVICULA1Navicula maculata (Bail.) Cl.[90]2Navicula prætexta Ehr.[92]3Navicula latissima Greg.[90]4Navicula irrorata Grev.[93]5Navicula latissima var. elongata (Pant.) Cl.[91]6Navicula fuchsii Pant.[91]