This volume includes one of the largest families of flowering plants in tropical Africa, viz. Euphorbiaceae. In general it follows the rules outlined for the first volume. However, due to the horticultural interest of certain genera of Euphorbiaceae and to the exceptional morphological variation the species listed, under Euphorbia and Monadenium. The present volume covers 6 families, including 123 (+1) genera and 1551 species.