Language: Chinese, with bilingual preface and foreword in English and Chinese, English keys, and scientific nomenclature and name index
Volume 18 covers the following groups
Chlorophyta
Zygnemaphyceae
Desmidiales
Desmidiineae
15. Xanthidium Ralfs
16. Staurastrum Ralfs
17. Staurodesmus Teiling
18. Spondylosium Kutzing
19. Onychonema Wallich
20. Teilingia Bourrelly
21. Sphaerozosma Ralfs
22. Hyalotheca Ralfs.
23. Bambusina Kutzing
24. Phymatodocis Nordstedt
25. Desmidium Ralfs
26. Streptonema Wallich