Diatom species

Ovoide form

SEE MIDDLE FORM   406-MID

1

 Biddulphia rhombus

2

3

 Podocystis spathulata

4

5

 Cymatopleura elliptica

6

 C. elliptica var hibernica

7

8

9

 Diploneis litoralis

10

11

12

13

14

 Navicula cuspidata

15

 Navicula humerosa

16

 Nitzschia navicularis

17

 Lyrella lyra

18

 Lyrella lyroides

19

 Navicula palpebralis

20

 Navicula yarrensis

21

22

 Entomoneis alata

23

24

 Surirella biseriata var bifrons

25

 Surirella elegans

26

27

28

29

30

 Surirella ovalis var maxima

31

 Surirella turgida

32

33

34

35

36