The Diatomaceæ of Philadelphia and Vicinity

PLATE 28

Reading edition

Fig. Page PINNULARIA 1 Pinnularia nobilis Ehr. 103 2 Pinnularia major var. pulchella n. var. 102 3 Pinnularia dactylus Ehr. 103 4 Pinnularia major (Kuetz.) Wm. Sm. 102

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

PINNULARIA

1 Pinnularia nobilis Ehr. 103

2 Pinnularia major var. pulchella n. var. 102

3 Pinnularia dactylus Ehr. 103

4 Pinnularia major (Kuetz.) Wm. Sm. 102