PLATE 16 

 FIG. PAGE 



ACHNANTHES 



1-2 Achnanthes longipes Ag 58 



3 Achnanthes brevipes Ag 59 



4-5-6 Achnanthes subsessilis Kuetz 59 



7-8 Achnanthes inflata (Kuetz.) Grun 59 



9 Achnanthes coarctata (Br6b.) Grun 59 



10-11-12 Achnanthes lanceolata (Breb.) Grun 59 



13 Achnanthes danica (Floegel) Grun. (lower valve) 60 



14-15 Achnanthes exigua Grun 59 



16-17 Achnanthes linearis forma curta H. L. Smith. ... 59 



COCCONEIS 



18 Cocconeis scutellum var.? 57 



19-20 Cocconeis placentula Ehr 57 



21 Cocconeis scutellum Ehr. (upper valve) 57 



22 Cocconeis dirupta Greg, (lower valve) 58 



23-24 Cocconeis pediculus Ehr 57 



25-26 Cocconeis pellucida Grun 58 



27-28 Cocconeis scutellum var. ornata Grun 57 



29 Cocconeis placentula var. lineata (Ehr.) V. H 58 



ANORTHONEIS 



30-31 Anorthoneis excentrica (Donk.) Grun 56 



