| Fig. | | Page | | GYROSIGMA | | 1 | Gyrosigma strigilis (Wm. Sm.) Cl. | 76 | | 2 | Gyrosigma balticum (Ehr.) Cl. | 75 | | 3 | Gyrosigma hippocampus (Ehr.) | 75 | | 4 | Gyrosigma simile (Grun.) | 76 | | 5 | Gyrosigma acuminatum (Kuetz.) Cl. | 76 | | 6 | Gyrosigma scalproides (Rab.) Cl. | 76 | | 7 | Gyrosigma parkeri var. stauroneioides Grun. | 75 | | 8 | Gyrosigma spencerii var. nodifera Grun. | 76 | | 9 | Gyrosigma fasciola (Ehr.) Cl. | 77 | | | | Fig. | | Page | | GYROSIGMA | | 1 | Gyrosigma strigilis (Wm. Sm.) Cl. | 76 | | 2 | Gyrosigma balticum (Ehr.) Cl. | 75 | | 3 | Gyrosigma hippocampus (Ehr.) | 75 | | 4 | Gyrosigma simile (Grun.) | 76 | | 5 | Gyrosigma acuminatum (Kuetz.) Cl. | 76 | | 6 | Gyrosigma scalproides (Rab.) Cl. | 76 | | 7 | Gyrosigma parkeri var. stauroneioides Grun. | 75 | | 8 | Gyrosigma spencerii var. nodifera Grun. | 76 | | 9 | Gyrosigma fasciola (Ehr.) Cl. | 77 | |
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