Includes bibliographic references. Contents: [v.1.] Sapindaceae - v.17. Apocynaceae - v.18. Callitrichaceae - v.19. Haloragaceae - v.20. Menyanthaceae - v.21. Burseraceae - v.22. Gesneriaceae - v.23. Gramineae V - v.24. Aquifoliaceae - V.25. Compositae III