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The Diatomaceæ of Philadelphia and Vicinity

PLATE 11

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Fig. Page SYNEDRA—Continued 1-5-6 Synedra ulna (Nitzsch) Ehr. Sporangial 47 2 Synedra danica Kuetz. 48 3 Synedra biceps (Kuetz.) A. S. 48 4-7-11 Synedra ulna (Nitzsch) Ehr. 47 8 Synedra capitata Ehr. 48 9-18 Synedra acus Kuetz. 48 10 Synedra fulgens (Grev.) Wm. Sm. 50 12-13 Synedra goulardi Bréb. 48 14-15-16 Synedra pulchella (Ralfs) Kuetz. 48 17 Synedra pulchella var. abnormis Macchiati? 48

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

SYNEDRA—Continued

1-5-6 Synedra ulna (Nitzsch) Ehr. Sporangial 47

2 Synedra danica Kuetz. 48

3 Synedra biceps (Kuetz.) A. S. 48

4-7-11 Synedra ulna (Nitzsch) Ehr. 47

8 Synedra capitata Ehr. 48

9-18 Synedra acus Kuetz. 48

10 Synedra fulgens (Grev.) Wm. Sm. 50

12-13 Synedra goulardi Bréb. 48

14-15-16 Synedra pulchella (Ralfs) Kuetz. 48

17 Synedra pulchella var. abnormis Macchiati? 48

Illustration from The Diatomaceæ of Philadelphia and Vicinity
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