- 1. Spirogyra in conjugation with zygotes Lieder_2606e
- 2. Spirogyra, filamentous green alga in nutrient-rich water Lieder_4548c
- 3. Spirogyra showing conjugation stages and formation of zygotes Lieder_5112e
- 4. Spirogyra, green alga with spiral chloroplasts Lieder_7017c
- 5. Vegetative filaments, Spirogyra, Zygnema, Mougeotia Lieder_75719d
- 6. Spirogyra scalariform conjugation showing zygotes following conjugation Lieder_76008d
- 7. Spirogyra sp., vegetative filaments w.m. Lieder_79166c
- 8. Spirogyra sp., scalariform conjugation and zygotes following conjugation, w.m. Lieder_79167e
- 9. Spirogyra, a common alga with spiral chloroplasts, w.m. of vegetative filaments, carefully Lieder_Ag151c
- 10. Spirogyra, vegetative w.m., a large species with several chloroplasts in each cell Lieder_Ag1512d
- 11. Spirogyra, in scalariform conjugation and after the stage of conjugation, w.m. Lieder_Ag152e
- 12. Spirogyra, showing formation of zygotes w.m. Lieder_Ag153e
- 13. Alge, Spirogyra, razmnož.,w.m. 3013
- 14. Alga, Spirogyra,razmnoževanje 3015
- 15. Spirogyra, vegetative filaments with 515C